【摘要】 本文对大豆“两垄一沟”栽培法土壤耕层中水分、温度、容重、三相比、土壤养分和根系生长状况进行了研究。结果表明，该栽培法０—３０ｃｍ耕层含水量和温度均较高；容重除两垄一沟中间行０—１０ｃｍ耕层较小外，其它耕层也较高；三相比２０—３０ｃｍ耕层中空气减少，固相有增加，容积含水量增加最大；土壤中速效氮和速效磷有明显增加。说明“两垄一沟”栽培法改善了土壤耕层理化特性，创造了良好的环境条件，促进根系生长，增加大量不定根和中小根瘤，有利于大豆后期的生长发育。更多还原

【Abstract】 This study un Effectivenness of tillage soil layer enviromest and soybean root sorwth of "two ridses a furruw" (TRAF ) planting pattern was conducted during 1991～1992.The results were shown that the soil moisture and temperature of tillage soil layer of IRAF were hisher than those on 70cm ridge. Soil conpaction of tillage soil layer (20～30cm) was higher except that of tillase soil layer (0～10cm ) of middle row of TRAF. However, gas phase was reduced, soil phase and liquid phase were increased in the three phase proportion of tillage soil layer (20～30cm). This indicated that the planting pattern of TRAF improves the enviromented condition of tillage soil layer, raise resistant drought ability, increases the amount of root and root nodules improves plant growth and development in late srowth period.更多还原