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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.
Soybean in the semi-arid western area of western Heilongjiang Province was used for tillage cultivation, which increased the ridge body, reduced tillage times and increased soil water retention capacity. The precipitation utilization rate increased by 21.1%. With the increase of ridge distance, the marginal effect was obvious. The relative wind speed between plant and row increased by 36-89% and 66-156% respectively, and the CO2 concentration in canopy increased by 10.1-40.0%. Photosynthetic intensity increased 38.6%, light energy utilization increased by 13.7%, topsoil temperature increased 0.1-0.6 ℃. In the semi-arid area, the rate of falling pod flowers decreased by 4.7%, the pod rate decreased by 6.5%, the pod rate increased by 8.7%, the biological yield increased by 18.8-35.4% and the seed yield increased 7.8-40.3%, with an average yield of 181.9kg per mu, an increase of 22.1% over the control and a maximum of 230.3kg per mu.