大豆窄行密植高产栽培技术的研究

大豆窄行密栽培是一项引自美国的大豆增产新技术，经消化、吸收、改造，已形成大垅窄行密植、小垅窄行密植、平作窄行密植三种栽培模式，在不同生态条件和不同生产力水平条件下推广，一般可增产20％以上。已累计推广67万hm^2，获得了显著的经济效益。大豆窄行密植由于缩小了行距，扩大了株距使植株分布更均匀合理，增加了绿色面积，改善了受光条件，特别是改善了中、下层受光条件，是该项技术增产的生理基础。此项技术的主要内容是抗倒伏半矮秆的品种，深松深施肥，有效地使用除草剂技术和适于窄行密植的播种机械。

STUDY ON TECHNOLIOGY FOR HIGH YIELD OF SOLID-SEEDED SOYBEAN

Technology of solid-seeded soybean is a new culture technology imported from American, and can increase yield of soybean. This technology has been assimilated and improved, and there has formed three culture patterns that is solid-seeded with wide row, solid-seeded with narrow row and solid-seeded woth level culture. These technologies have been developed with different ecology factors and different productive force levels, and can increase yield of soybean by more than 20%. Soybean area used these technologies has been grown to 670 thousend hectares and has achieved remarkable econcmic benefit. The technology of solid-seeded soybean make the row space narrow,the plant space wide and the distribution of plant more reasonable, which increasegreen area and improve factors of illumination, especially tthe factors in middle and lower levels. All these are the physiological baes of increasing yield. The key of this technology is semi-short variety, deeply loosened soil and application of fertilizers, herbicides and sintable machines