早播大豆的栽培管理技术（Cultivation and management techniques of early sowing soybean）.docVIP

早播大豆的栽培管理技术（Cultivation and management techniques of early sowing soybean） Early cultivation of soybean cultivation management technology,.Txt accountant said: you come to pay later, I have no change.. Can you see that Ive polished the powder? Although you wear some cologne, I can still vaguely smell a scumbag. Both house and rot, faces an uncertain future. Both house and rot, faces an uncertain future. You are after the end do you escape from the trash? The most mysterious department in the history: the relevant departments. There is no denying that mosaic is the biggest obstacle to the progress of human nude art in this century! Cultivation and management techniques of early sowing soybean 1. sow good seed and catch whole seedling (1) mechanical flat sowing: all go to the autumn, there is autumn turn, autumn rake foundation, well drained land, but also has mechanical conditions, can implement mechanical narrow line sowing. Generally, 48 rows of seed drill can be used, and the row spacing can be reduced to less than 50 centimeters. In order not to press the seedlings or affect the management of the field, a key track is left at any distance so that the tractor can be operated. This sowing method can increase the amount of sowing, the average method is about 5 kilograms per mu. Narrow line planting requires 6 to 6.5 kg per mu. Density comparable large ridge increased by one or two, and the use of varieties of straw is not inverted, appropriate early maturity is appropriate, such as Heihe 5, Hefeng 25, ha 76~2 and double 76~3. The advantages of this method are: spring sowing through soil, soil moisture and drought can reduce soil water evaporation. The disc opener seeding, sowing depth, and the seed direct sowing in wet soil, soil moisture seedling. Generally increase production at more than 10%. (2) ridge sowing: for some autumn without plowing maize and sorghum in soybean stubble, plan, to forbid turning soil spring. There are two ways: one is to have a certain moi