In the prevention and treatment of drugs, we should first consider the toxicity of drugs to human body and the impact on the environment, and suggest using drugs with low toxicity and high efficiency as much as possible. High efficiency has two meanings: one is good killing effect, and the other is lasting effect. I usually choose varieties with a duration of more than 40 days. Drugs with low toxicity and high efficiency are indeed more expensive in terms of unit price, but I think it is acceptable after analysis:

1. These drugs are generally diluted more than 5000 times, and other drugs, such as avermectin, are diluted 1000 times.

2. The efficacy lasts for more than 45 days, and the efficacy of avermectin and other general drugs lasts for 7 days.

When spraying pesticides, it should be effectively sprayed on the back of leaves, because the red spider is mainly stationed on the back of leaves. It is best to prepare medicines in advance and buy plants, especially seedlings, which are prone to red spiders, such as Chinese rose.

One. Mite danger

This is the first drug with low toxicity and high efficiency that I have used. The minimum dose is 100 ml. At that time, the price seemed to be over 60, but now it is only over 40. I've used the third bottle now, and it expires every time I haven't used it, but I think it's still a good deal for me. Please compare the following drugs.

Produced by Bayer Crop Science Company in Germany, the actual component is spirodiclofen, and the bottled suspension is 100 ml. Control target: all kinds of mites, including common red spiders and white spiders. Eggs, nymphs and female adult mites are mainly controlled by contact killing and stomach poisoning, and the effect of killing eggs is outstanding. Dilute 4000-6000 times for later use.

Product features:

1. broad-spectrum acaricide.

2. Long duration, up to 35-45 days. I usually take the medicine again within 40 days to continue the next stage of prevention and treatment.

3. The mechanism of acaricide is to inhibit the fat synthesis in the body and destroy the energy metabolism of mites, thus killing mites, which is different from the commonly used neuroacaricide, so there is no risk of cross-resistance to the existing acaricide.

4. Good safety for crops, and very safe under different temperature conditions.

5. Strong lipophilicity and rain erosion resistance. Generally, it rains after spraying for 3 hours, which will not affect the normal play of the drug effect.

6. Low toxicity, relatively safe for people and the natural environment.

Two. Acaroid mite

My experience is that the efficacy is similar to that of acaricide, and it belongs to a kind of low toxicity acaricide. Bifenazate SC with 43% composition is currently sold in 5 ml bags, and its usage times are 3,000-5,000 times, which is produced by Kemenya Company of the United States.

Mite mites are effective in all life stages of mites, killing eggs and adults, which is the most advantageous place compared with other low-toxicity and high-efficiency acaricides. The duration is long, about 14 days at 25 degrees, and more than 40 days above 25 degrees. Because Starscream mainly occurs above 25 degrees, I can use it within 40 days.

Three. Tetraflubendazole

The active ingredient is named 1 1% emamectin benzoate, and the dosage form is suspension. At present, there are two kinds of packaging: bagged 10 ml and bottled 100 ml, and the prices are around 7 yuan and more than 50 yuan respectively.

The manufacturer of emamectin benzoate is Sumitomo Chemical Column Society. The main performance of this medicine is that it has a good killing effect on all kinds of young nymphs, and it is resistant to rain erosion. The validity period is 50 days, but I usually spray it again around the 40th day. When in normal use, it has little influence on beneficial organisms and is safe for crops. Dilution 5000-7500 times, so the cost performance is super high.

Just like mite insurance, it should be used in the early stage of young red spider mites, and in the serious case of red spider, it should be used in conjunction with drugs with the effect of killing adults.

Four. Abamedine

I don't want to post pictures of avermectin. This product is made in China and produced by many manufacturers. The products of well-known manufacturers are very effective.

This is a broad-spectrum insecticide and acaricide. Although it tastes heavy, it is actually a low-toxic pesticide. The effect of killing spiders and other pests is reliable and trustworthy. General dilution 1000 times. Avermectin has stomach toxicity and contact toxicity to mites and insects, so it cannot kill eggs.

I have been using abamectin, but the main purpose is not to kill the red spider, because compared with the above three kinds, the duration of abamectin is only one week, and my main force to control the red spider is the above three kinds. Avermectin is generally used to kill aphids, thrips, Plutella xylostella, Pieris rapae, whitefly and so on. Avermectin is a magical drug in terms of broad spectrum and low cost.

When the red spider broke out seriously, avermectin combined with one of the above three kinds had excellent killing effect on the red spider. If plants are not spider kings like roses, avermectin is a good choice. When spiders happen, spraying twice can solve the problem.

Five. Jin manzhi

The active ingredient is fenpropathrin 20% suspension, which is an acaricide developed by Otsuka Chemical Company of Japan. It is effective against eggs, nymphs and adults of tetranychus mites. No phytotoxicity to various plants, and low toxicity to non-target organisms such as mammals, aquatic organisms, beneficial organisms and natural enemies. Dilution 1500-2500 times, valid for more than 30 days. At present, there are two kinds of packaging: bagged 10 ml and bottled 100 ml, and the prices are 5-6 yuan and 40 yuan respectively.

Because its dilution multiple is about 2000, and its duration is shorter than that of acaricide, acaricide and ethoconazole by 15 days, I feel that its cost performance is not as good as the first three, and the most important thing is that it will increase the spraying times. I don't like spraying, so I seldom use it.

According to reports, in addition to killing red spiders, Golden Branch also has a good control effect on Plutella xylostella, aphids, powdery mildew and downy mildew.

Six. Riding Shotgun

I also started using the pesticide of the escort. At present, many flower lovers are still using it. This medicine is really effective for Starscream, so let's talk about flower protectors together.

The flower escort did not specify the active ingredients. Judging from its strong taste, I think it should contain abamectin, which can also be used to kill pests that abamectin can kill, but it can also kill bacteria, so it should be a compound preparation.

Considering the safety of medication, I have given up using flower protection drugs, and it is best not to use drugs with unknown ingredients. In addition, its dilution multiple is 200 times, and its cost performance is relatively low, so it is better to use avermectin. As for the duration, I used to use it for about a week.

Cultivation techniques of rose

linewidth

Roses planted in the open field have developed roots, rapid growth, strong plants, small flowers and high ornamental value. In management, cultivation measures are selected according to different types, growth habits and geographical conditions. Planting density is 75cm×75cm for upright varieties, 100cm× 100cm for expansive varieties, 40cm×50cm for longitudinal varieties and 20cm for rattan varieties. The spacing between plants planting roses on the ground is 50- 100 cm, which depends on the size and needs of seedlings. [9]

land

Open field cultivation sites are selected in places with high terrain, sufficient sunshine, good air circulation and slightly acidic soil. When cultivating, dig deep into the soil and apply organic fertilizer as base fertilizer. Potted rose should be planted on sandy soil rich in humus and slightly acidic and fertile, and alkaline soil should not be used. Every spring, before the new buds germinate, change the soil in the pot to facilitate their vigorous growth. Changing the soil will help bloom in that year. Chinese rose can be planted in flowerpots of various materials, and so can clay pots. When preparing nutrient soil, attention should be paid to drainage, ventilation and the collocation of various nutrients. Its ratio is garden soil: humus soil: chaff ash = 5: 3: 2. It is suitable for turning pots, pruning roots and changing soil before and after wintering every year, and increasing the diameter of pots year by year, especially pottery pots. [9]

illuminate

Chinese rose flowers like light, and there should be enough sunshine during the growing period, at least 6 hours a day, otherwise only long leaves will not bloom, even if buds are formed, they will not be bright or fragrant after flowering. [9]

water

Watering Chinese rose flowers is very particular. You should alternate between dry and wet, not dry and not watered, but watered thoroughly. Chinese rose flowers are afraid of flooding, and there can be no water in the basin, which is easy to rot. Water should be poured once a day in midsummer, until the surface of the basin soil turns white. During the winter dormancy period, be sure to water less and keep it semi-humid. The watering of roses changes with the seasons. Just keep the soil moist during the winter dormancy period, and don't dry it completely. In early spring, the branches grow forward, the branches and leaves grow, the amount of water is appropriately increased, and 1 time water is poured in the morning and evening. In the peak season and flowering period, we should increase the amount of watering. In summer, the temperature is high, water evaporation increases, and plants are in a weak and semi-dormant state. Drying and dehydration are most prohibited. Water once every morning and evening to avoid exposure to the sun. When watering at high temperature, a small amount of water will seep out from the bottom of the basin every time, indicating that it has been watered thoroughly. Don't splash water on leaves when watering, in case you get sick. [9]

live through the winter

If there are warm conditions at home in winter, the room temperature should be kept above 18℃ and there should be more than 6 hours of light every day. If there are no warm measures, let it sleep naturally. In early winter, after the leaves fall off, only 5 cm branches are left on each branch, and all branches above 5 cm are cut off. Then store the flowerpot in a cool place at about 0℃. The soil in the flowerpot should be a little dry, but it should not be too dry to prevent it from dying. [9]

Fertilize soil or land

Chinese rose likes fat. Potted roses should be fertilized frequently and watered every ten days during the growing season. No matter what fertilizer is used, remember not to overdo it to prevent fertilizer damage and damage flower seedlings. But fertilization is not allowed in winter dormancy period. Rose likes fertilizer, and the base fertilizer is mainly slow-acting organic fertilizer, such as decomposed cow dung, chicken manure, bean cake, oil residue and so on. Adding liquid fertilizer and water once every half month can always keep the leaves thick, dark green and shiny. Concentrated liquid fertilizer can be applied once before germination in early spring, and no fertilizer can be applied at flowering stage. After flowering in June, liquid fertilizer can be applied again. In September, when axillary buds are about to germinate for the fourth or fifth time, medium liquid fertilizer can be applied once, and decomposed organic fertilizer can be applied once when hibernating in June 5438+February. In winter ploughing, human manure, urine or decomposed organic fertilizer can be applied and then turned into the soil. Fertilize frequently during the growth period, and topdressing 1-2 times of quick-acting fertilizer after flowering. Thin fertilizer should be applied during high temperature and drought, the last fertilizer should be applied before winter, and weeds should be removed in time before fertilization. [9]

decrease

Cut off the buds after flowering. When the bud of Chinese rose just appears, choose a well-shaped bud to stay and cut off the rest. The purpose is to leave only one bud on each branch, and the flowers will be full, gorgeous, big and fragrant in the future. After each season, all flowers must be pruned. Generally, it is advisable to cut off the open residual flowers and thin, crossed and overlapping branches in time, leaving thick and tender branches, only 3-6 cm away from the base, leaving lateral buds, cutting them into natural and gratifying shapes, making the plants beautiful and prolonging the flowering period. In addition, potted roses should be short, flowery and fragrant. [9]

Summer pruning is mainly to cut off the budding branches of grafted rootstocks, cut off the residual flowers with leaves after flowering and sparse the redundant buds, reduce the consumption of nutrients and create good conditions for the next flowering. In order to make the plant beautiful, the long branches 1/3 or half can be cut off, the middle branches 1/3 can be cut off, and the leaves above 1 cm can be cut obliquely. If the pruning is too light, the plants will grow taller, the branches will become thinner and the flowers will become smaller. Pruning in winter depends on varieties and cultivation purposes. Keep the branches when pruning, and pay attention to the overall shape of the plant. Large-flowered varieties should leave 4-6 branches with a length of 30-45 cm, with strong buds on one side and the upper branches cut off. For vines or vine varieties, we should dilute the old skills, cut off weak branches and diseased branches, and cultivate the trunk. [9]

ventilate

Whether it is garden cultivation or balcony cultivation, we should pay attention to ventilation. With good ventilation, Chinese rose can grow healthily and reduce the occurrence of pests and diseases. [9]

temperature

Rose likes cool and warm climate and is afraid of high temperature. The optimum temperature is 18-28℃. When the temperature exceeds 32℃, flower bud differentiation will be inhibited. So in summer when the temperature is high, roses generally don't bloom, even if there are a few, they are much worse than at room temperature. You can move the flowerpot to a cool place for maintenance at high temperature.

Main uses of Chinese rose

Landscape beautification

Rose has an indispensable value in landscaping, and it is the most frequently used flower in north and south gardens. Rose is the main ornamental flower in spring, with long flowering period, high ornamental value and low price, which is loved by gardens all over the world. It can be used to decorate flower beds, flower borders and courtyard flowers in gardens, and can be used to make rose bonsai, cut flowers, flower baskets, bouquets and so on.

Because of its climbing growth characteristics, Chinese rose is mainly used for vertical greening and plays a unique role in landscape and beautiful flower environment. If we can form pleasing energy paths and patterns, make all kinds of arches, grids and frames for Chinese roses to climb on, and then after proper pruning and modeling, we can decorate the building and become a clever way to connect the building with the garden? A tie? .

Environmental protection function

It can be made into continuous flower fences, flower screens and flower walls, which can be used in institutions, schools, residential quarters, city squares and other places. It can not only purify the air and beautify the environment, but also greatly reduce the noise pollution in surrounding areas and alleviate the greenhouse effect of cities in hot summer. Rose is also an expert in absorbing harmful gases, which can absorb hydrogen sulfide, hydrogen fluoride, benzene, phenol and other harmful gases, and has strong resistance to sulfur dioxide and nitrogen dioxide, so rose is also a good flower to protect human living environment.

Medicinal value

Flowers can extract spices. Roots, leaves and flowers can be used as medicine, which has the effects of promoting blood circulation, reducing swelling, diminishing inflammation and detoxifying. And it is a good medicine for gynecology. Chinese medicine believes that Chinese rose is sweet and warm, and it has the effects of promoting blood circulation, regulating menstruation, reducing swelling and detoxifying when entering the liver meridian. Chinese rose is often used to treat irregular menstruation, dysmenorrhea and other diseases because of its obvious effects of removing blood stasis, promoting qi circulation and relieving pain.

Menstruation, leucorrhea, with Chinese rose (or root) 15g water decoction or pork stew; Chinese rose 10g and jujube 12g are decocted together, and a proper amount of honey is added after the soup is decocted. This prescription is fragrant and sweet, unlike medicine, and it is very effective for menstrual hot flashes. In addition, women often use rose petals to soak in water as tea to drink, or join other bodybuilding teas to drink, which can also promote blood circulation, and beauty beauty can keep people young for a long time.