First, do a good job in standardized colonization.

① Apply sufficient base fertilizer. Choose fields with rich organic matter, fertile and loose soil layer and good irrigation performance, and use organic fertilizers such as pig, sheep and chicken manure. For several months, it was covered with agricultural film, disinfected with solar energy at high temperature, and added with appropriate amount of chemical fertilizer. The fertilization amount per mu is 400 kg of organic fertilizer, 50 kg of rapeseed cake/kloc-0, 50 kg of compound fertilizer (containing sulfur) and 0 kg of urea/kloc-0. After fertilization, irrigation and intensive cultivation are carried out, the fertilizer is fully mixed into the soil, and the border is leveled after the water in the field naturally falls dry. After ridging, spray herbicide.

② Soil disinfection. Use Lvxiang 1 to add trichlorfon to disinfect and kill insects in the land once to reduce the occurrence of land diseases and insect pests.

③ Colonization. The planting time of greenhouse cultivation should be determined according to the differentiation degree of top flower buds. Through microscopic examination, when the differentiation rate reaches 50%, the top flower bud can be planted. In production practice, flower bud differentiation will be realized if the shortened stem appears obvious bow back and spikes appear on the petiole at the base of leaves. According to the climatic conditions, the annual planting time in Lin 'an is in the middle and late September. A standard greenhouse with a width of 6 meters is planted in 8 rows with a spacing of 20-25 cm. Plant two rows in the east-west direction, with 6000-8000 plants per mu. When planting, the neck and back of the root of the seedling should be arched in the ditch, and half of the root system should be cut off, otherwise the seedling itself will grow vigorously, the number of flowers will increase and the fruit deformation will be small. The planting depth requires that the stem of the seedling core should be flush with the soil surface, so that the root is shallow and the heart is not buried deep. Immediately after planting, water the seedlings once, and then water them in time according to the wet and dry conditions of the soil, so as to facilitate survival and greening. Cover the film in time after survival, and cover the film in time according to the climate change in the middle and late period of 10.

Second, factory management.

Strawberry seedlings are planted until they sprout. Generally, 5-6 leaves and one bud are required. Excessive old leaves, buds and axillary buds should be removed in time. After flowering and fruiting, old leaves and withered leaves with yellow stems should be removed, and stolons should be removed in time to reduce consumption. Remove twigs and weak fruits. Generally, each fruit stalk has 7-9 fruits to increase the fruits and improve the quality.

Third, greenhouse management strawberry temperature and humidity control

The optimum temperature for strawberry growth is 20-28℃, and high temperature above 36℃ and low temperature below 5℃ are not conducive to strawberry growth. Generally, the temperature is controlled between 25-28℃ during the day, not exceeding 30 degrees, and 7 degrees at night is appropriate. The initial flowering period is maintained at 25 degrees, and the flowering period is controlled at 23 degrees. From the end of 1 February to the end of1month, when the shed temperature is below 5 degrees, the shed should be provided with double-button membrane for small arch shed, and three-layer membrane should be used for thermal insulation when the temperature is extremely low. The humidity in the shed should be controlled below 80% before flowering, and below 60% from flowering to fruit expansion. In order to prevent the attack of high temperature and high humidity, ventilation is used around noon. In April of the following year, when the temperature rises obviously, the film on both sides of the greenhouse can be removed to increase the ventilation, reduce the temperature and humidity and prolong the fruit-bearing period.

Fourth, bees are released during flowering.

Although strawberries can pollinate themselves, the lack of spreading insects in the greenhouse will lead to poor pollination and abnormal results. Using bees to assist cross pollination has obvious effect on improving quality and increasing yield. Bee release should be carried out at the early flowering stage, and chemical agents should not be sprayed at the flowering stage, so as not to affect pollination and produce deformed fruits. And appropriate thinning flowers and fruits, so that high and low, strong and weak.

Verb (abbreviation for verb) fertilizer and water management

Strawberry base fertilizer in greenhouse is sufficient, most of which is organic fertilizer, and the amount of topdressing is less. However, timely supplementation of phosphorus, potassium and various trace elements according to strawberry growth can not be ignored. Strawberry needs enough water in the whole growth process, the soil moisture can be slightly dry at flowering stage, and more water is needed in the vigorous growth period of strawberry and berry expansion period. Irrigation can be combined with fertilization, and the fertilizer can be dissolved in water to make a solution about 1000 times for application. When the soil moisture is too high for irrigation, the fertilizer solution can be directly applied into the soil through the pipeline, and when the soil is dry, the fertilizer can be diluted to 4000 times. Irrigation by pipeline is also adopted, which is labor-saving and convenient. After the spring of the following year, with the temperature rising, the production speed was accelerated. In order to avoid acidification of strawberry fruit, potassium fertilizer should be added, and about 5 kg of 0.3% potassium sulfate should be applied per mu.

Six, pest control

With the continuous expansion of strawberry planting area and the increase of planting years in our city, the harm degree of pests and diseases is also increasing, and new varieties of pests and diseases are also emerging. The main pests and diseases are aphids, spider mites, gray mold, powdery mildew and bud blight. It can kill pyrethroids with 20% synergistic effect on aphids and red spiders, and 40% dimethoate is 1500 times. Gray mold is most likely to occur in high temperature and high humidity and strawberry growth period. It is effective to control it with 50% Sukeling 800 times solution. At present, bud blight in some strawberry planting areas should be treated by picking old leaves, ventilation and light transmission, and spraying 1000 times of polyoxin or 600 times of dichlorvos aqueous solution every other week.

According to the development of strawberries in our city, we should pay attention to the following aspects: First, strawberries cannot be planted in the same field for 3-5 years. If strawberries are planted in the same field for many years, many trace elements needed by strawberries will be lacking, resulting in low yield and poor quality. Second, because the cultivated strawberries have not been purified and rejuvenated, the variety characteristics will become worse, so it is necessary to purify and rejuvenate or introduce excellent new varieties. Third, in greenhouse cultivation, we should vigorously promote the use of carbon dioxide gas fertilizer. Because the application of carbon dioxide gas fertilizer in greenhouse can effectively improve photosynthesis, this measure can make strawberry harvest 8- 10 days in advance, improve strawberry fruit quality, and increase yield by more than 10%, thus achieving the effect of increasing production and income. Fourth, vigorously introduce and promote excellent varieties. At present, China has introduced a large number of fine varieties from the United States, the Netherlands and Japan. These varieties have the same characteristics-shallow dormancy, early market, high yield, more than 3000 kilograms per mu, large single fruit, good quality and storage and transportation resistance. For example, the average fruit weight of American generals is 58 grams, and the maximum fruit weight is 122 grams. Another example is Michelia Holland, whose average fruit weight is 47.4 grams, and the largest fruit is 102 grams.