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1997-1999年,在襄汾县就冬小麦地膜覆盖模式播期密度进行了连续对比研究,结果表明,不同模式增产效果不同,产量依次为:半覆盖条穴播(襄汾式)>膜侧条播(坑东式)>穴播(甘肃式)。不同播期密度表现不同程度增产,其主要原因是蓄水供水耗水三者之间的协调程度不同。
From 1997 to 1999, the sowing density of winter wheat in sowing pattern was continuously compared in sowing date in Xiangfen County. The results showed that the yields of different patterns were different. The yields were in order of semi-covered barn-sowing (Xiangfen) Hang East)> Bunch (Gansu style). Different Sowing Seeding Density showed different degrees of increase, mainly due to the different degree of coordination between the three.