【摘要】 黑龙江省西部半干旱地区大豆采用带作少耕栽培，使垄体增大，耕翻次数减少，土壤保水能力提高，降水利用率提高２１．１％。带作穴播由于垄间距离增加，边际效应明显，株、行间相对风速分别增加３６—８９％和６６—１５６％，冠层内ＣＯ２浓度提高１０．１—４０．０％。光合强度增加３８．６％，光能利用率提高１３．７％，耕层土壤温度提高０．１—０．６℃．半干旱地区大豆带作少耕栽培落花率减少４．７％，落荚率减少６．５％，成荚率增加８．７％，生物产量增加１８．８—３５．４％，籽实产量提高７．８—４０．３％，平均亩产１８１．９ｋｇ，比对照增产２２．１％，最高亩产达到２３０．３ｋｇ．更多还原

【Abstract】 In semi-arid areas in HLJ, the soybeans were grown with band-sowing and lessplouyhing, which enlarged the space of ridge, reduced the times of tillage and improved the capability of retentive water in soil, as well as increased utiliration ratio of precipitation by 21. 1%. As a result of incraseing obviousty row space and margin effect by using this method, ralative wind speeds among plants and in rows were increased by 36-89% and 66 -156%, respectively. Concentration of Carbon Dioxide in canopy of plants was raised by 10. 1-40. 0%, photusyhthetic capacity increased by 38. 6 0%, utilization ratio of luminous energy by 13. 7%, top soil temperature increased 0.1-0. 6℃ . By use of this method in semiarid areas , the ratio of abscission of flowers and pods were reduced by 4. 7% and 6. 5%, respectively ,and mature pods inceased by 8. 70%, and the yields of plant ports and seeds increased by 18. 8- 35. 4% and 7. 8-40. 3%. The average yield per mu was 181. 9kg, increased by 22. 1% as compaved with that of control. The highest yield per mu reached to be 230. 3kg.更多还原