What are the planting elements of Hevea brasiliensis? Can it be planted in the north?

When it comes to rubber tree, many people may not have seen it, but when it comes to rubber, people are very familiar with it, because rubber tree products are everywhere in people's daily life. For example, rubber tires, shoes and all kinds of pipe suits are made of rubber. Although rubber is used everywhere, rubber trees can not grow everywhere and can only be planted in tropical areas of China.

Hevea brasiliensis is a tropical plant. The environment suitable for his life is the tropical area with high temperature in four seasons and large water demand. China is located in the northern hemisphere, and the Tropic of Cancer runs through the south of China. Only the south has a tropical climate.

The southern tropical rain forest area is suitable for planting rubber trees: (1) altitude. (upper limit of glue planting) below 950m. (2) Soil conditions. Weathered layer with depth above 60- 100 cm is loose and fertile, with organic matter content above 1.5%, PH value of 4.5-6.5, good drainage and groundwater level below 100 cm. (3) Slope direction. Choose sunny slopes (southeast slope, south slope, southwest slope and west slope) and semi-sunny slopes (east slope and northwest slope) instead of shady slopes.

Rubber planting methods mainly include the following points:

1. Environmental choice for planting rubber: rubber can only be planted near tropical coast, and there are often some heavy rains and even typhoons in this area, so if you want to plant rubber seedlings, you must dig a deep cave and even repair terraces. If possible, planting rubber trees in some flat places can effectively prevent rubber trees from lodging.

2. Rubber planting process: The rubber planting time is from February to March. At that time, the temperature was not particularly stable, so it can be postponed appropriately until the temperature gradually rises before planting. It is best to plant rubber trees on cloudy days or when it rains. If the sunshine is strong, the water evaporation of rubber seedlings is serious, which will reduce the survival rate of rubber seedlings. Although it is easy to get precipitation in areas where rubber trees are planted, it is very beneficial to protect the roots of rubber trees. When planting rubber, there are certain requirements for density. It is best to plant about 35 trees per mu. Too dense planting will lead to the leaves covering each other during the growth of rubber trees, and too thin planting will cause land waste and not get relatively high yield.