Native to tropical and subtropical arid areas or desert areas. Under the condition of extremely dry soil and air, it survives with the help of water stored in stems and leaves.

1, keep above 5 degrees Celsius, preferably 20 to 30 degrees, not less than 5 degrees, and keep a certain temperature difference;

2. Water in different seasons. If it is very cold in winter, it should be taught once every ten and a half months. When the temperature is 15 to 25, you can water normally, once a day or two, and water less if it is too hot;

3. Fertilization has many restrictive factors. Fertilization can only be carried out at a relatively suitable temperature of 20 to 30 degrees, and fertilization cannot be carried out on newly cut, scarred, newly planted and underdeveloped roots. Don't get it on the ball when fertilizing. Organic fertilizer and 0.3% potassium dihydrogen phosphate can promote growth and development.

4. Place it outdoors in a sunny and well-ventilated place.

Bachelor tree:

In southern open field cultivation, we should choose a place with high terrain, dryness and good drainage to prevent soil water accumulation. Potted plants should choose fertile sandy loam with good drainage and ventilation as culture soil, and should not be watered too much and kept properly dry.

Spring and summer can be placed on the balcony or outdoors, properly trimmed and shaped to make it grow strong and beautiful. Sufficient light should be given during the growth period, and topdressing should be done once a month/kloc-0. However, it is not suitable for strong light in hot and humid summer, so it needs proper shading and ventilation. For indoor activities in winter, the temperature should be kept at 8 ~ 10℃, and it is safe to overwinter with less water.

Spindle tree:

On the Brazilian Plateau in South America, a tall and unique tree grows. It is 30 meters high, tapering at both ends and expanding in the middle, and the thickest part can reach 5 meters in diameter. From a distance, it looks like a huge spindle inserted in the ground, and people call it a spindle tree.

In the rainy season, this tree grows sparse branches and heart-shaped leaves on the top of the tall tree, like a big radish. As soon as the rainy season is over and the dry season comes, the green leaves wither one after another, but the red flowers bloom one after another. At this time, Haloxylon ammodendron has become a huge vase with red flowers, so people also call it bottle tree.

The bottle tree grows into such a strange shape because of its living environment. The Amazon river basin in northern Brazil is hot and rainy, belonging to the tropical rain forest area; The south and east have long dry seasons, dry climate and very dry soil, which are savanna belts. Located between the rainforest and the savanna, there are both rainy and dry seasons in a year, but the rainy season is short. Bottle tree lives in this middle zone. Its ecology has adapted to this special environment.

Falling leaves in dry season or growing rare new leaves in rainy season are all aimed at reducing evaporation and loss of water in the body. The root system of bottle tree is particularly developed. After the rainy season comes, it absorbs as much water as possible and stores it for later use. Generally, a big tree can store up to 2 tons of water, just like a green water tower. Therefore, it will not dry up and die in the long dry season.

Bottle trees, like tourist bananas, can provide water for travelers in the desert. As long as people dig a small hole in the tree, fresh thirst-quenching "drinks" can flow out continuously to solve the urgent need for water in the vast sand sea.

Banyan tree:

There are three sources of materials for tree bonsai: wild piles, cuttings and seedlings. This paper mainly talks about the cultivation of wild piles. The collection time of wild stumps is from February to 10 every year, especially from April to July. During this period, the climate is mild, the air is humid, the stumps take root and sprout quickly, and the survival rate is high.

The location of collecting wild piles should be at the foot of the mountain, at the edge of the village and at the corner of the ground. In these places, banyan bonsai is often trampled by livestock and artificially cut down, and the trunk twists and turns, making it easier to find a pile suitable for bonsai. Generally, the old banyan piles that go down the mountain are more than several decades old. When they are dug down, the roots of trees will be damaged to varying degrees, so they should be treated immediately.

Before planting, you can make a small incision according to the requirements of modeling, and then soak it in clear water for 2 to 3 days. If you can add some indolebutyric acid solution, the effect will be better. Generally speaking, as long as the natural pile is finished, after a year or two of careful cultivation, the air root will be born, and after making up for the deficiency, it will grow into an unexpectedly good pile.

When picking piles, be careful of the old piles, don't hurt the roots too much, try to take the thin roots and improve the survival insurance.

Coefficient. The tender pile doesn't have much scruples, and it can survive if it is intercepted halfway. The longer the tender pile, the better, the more plastic it is. It seems that ordinary pile materials can also be cultivated into good bonsai.

Pine tree:

1, watering: loose and sunny, with high dryness, and not resistant to water and humidity. Water should be used when drying, and more foliar water should be sprayed. Cypress trees can be watered more widely.

2. Fertilization: It is not suitable to apply heavy fertilizer to pine trees, and only 1-2 light fertilizers can be applied in spring and autumn. If cypress trees are to flourish, they can be fertilized more.

3. Picking buds: In the case of vigorous growth, picking buds and leaves can make the branches short and dense. Pinus tabulaeformis and Pinus densiflora, when some new branches are removed in summer, new buds can be born during the year. Black pine, after picking buds in spring, can give birth to multiple new buds in that year, and grow short branches and dense leaves in the second year.

Platycladus orientalis should be placed in the sunny place, and Platycladus orientalis cultivated in the courtyard should not be placed too close to the sunny wall to avoid the harm of red spider.

Extended data

The environmental resources of the earth mainly include the following four categories:

1, three life elements: air, water and earth;

2. Six natural resources: minerals, forests, fresh water, land, biological species and fossil fuels (oil, coal and natural gas);

3. Two types of ecosystems: terrestrial ecosystems (such as forests, grasslands, wilderness, shrubs, etc. ) and aquatic ecosystems (such as wetlands, lakes, rivers, oceans, etc. );

4. Diversified landscape resources: such as mountains, streams, original vivid plants, natural and cultural monuments, etc.

References:

Baidu encyclopedia environmental resources