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以三江平原小三江腹地具有代表性的地区二道河农场为试验基点 ,通过对此地区土壤容重、耕作时期、耕作方法等技术指标的测定 ,该地区获得大豆高产稳产的适宜土壤容重为 0 95～ 1 1g/cm3;秋季耕翻可提高土壤耕层的水分含量 ,起到保墒的作用 ,产量增加 ;在耕作方法上以深松 (深度 30cm以上 )耕法为主 ,通过垄作 ( 5 5～70cm)栽培可提高土壤温度 ,解决了该地区早春低温对大豆生长的影响
According to the determination of the technical indicators of soil bulk density, farming time and farming methods in this area, Erdaohe Farm, a representative area in the hinterland of the Little Three Rivers in the Sanjiang Plain, has a suitable soil bulk density of 0 95 ~ 1 1g / cm3. In the tillage method, subsoiling (deeper than 30cm) was the main method of tillage, and ridge planting (55 ~ 70cm) ) Cultivation can increase soil temperature, to solve the impact of early spring low temperature on soybean growth in the region