【摘要】 1996－1997年，在山西省临汾应用裂区设计法就各小麦地膜穴话的播期、密度进行了研究。结果表明，主因子播期A2（9月28日）与播期A1（9月21日）、播期A3（10月5日）的产量存在5％显著差异；副因子播量4个水平均存在5％显著差异；播期和播量间存在互作效应，以A2（9月28日）B2（297万位／hm2）组合产量最高，达4900．5kg／hm2。同时，对同一播期下、不同播量的土壤耗水规律及子粒灌浆速度进行了研究，为地膜冬小麦合理选择播期、密度提供了理论依据。更多还原

【Abstract】 The effects of sowing time and density on film-mulched and bunch-seeded winter wheatwere studied by using split plot experiment desing during 1996 ~1997 in linfen, Shanxi. The resultsshowed that the sowing date 28 September has significant yield-increasing effect compared with the dates21 September and 5 October, and significant difference exists among the four treatments of sowingdensity. Inteasetion between sowing time and density also exists and the optimal treatment combination,28 September and 2.97 × 106grains/hm2, can be adopted and the yield can reach up to 4 900.5kg/hm2.Comsumption regularies of soil water and grain-filling the were the studied. This study provides thetheoretical basis, on which the sowing time and rate can be selected for further extension of filmmulching and bunch - seeding in wheat growing area.更多还原