不同种植方式对小麦群体质量和产量结构的影响

为了深入研究小麦垄作栽培的增产机理,采用“大田切片法”研究了小麦不同种植方式（垄作和传统平作）的群体质量和产量结构。结果表明,垄作小麦冠层不同层次（上、中、下层）叶面积系数均高于平作小麦,并且群体透光率在各时期垄作也优于平作;垄作小麦的群体和旗叶光舍速率及干物质积累等指标也大于平作。表明小麦垄作栽培显著改善了群体质量。对小麦群体干物质的调查表明,垄作栽培提高了小麦茎秆基部充实度,因而垄作小麦的抗倒伏能力较强。垄作小麦较平作小麦增产11％左右。

Effect of Different Planting Patterns on Population Quality and Yield Structure of Wheat

The population quality and yield structure of winter wheat under different planting patterns(raised bed planting system and the conventional flat planting) were studied using the conventional "Layer upon layer cut method".The results based on LAI,solar radiation within the canopy,population and flag leaf photosynthetic rate,and dry biomass accumulation showed that the population function of the raised bed planting pattern was better than the conventional flat planting pattern.The investigation on dry biomass within wheat population testified that the substance of stem per cm was more than that with conventional flat planting,so the quality of the basal internodes and lodging resistance with raised bed planting were better than those of conventional flat planting.The grain yield of raised bed planting was higher than that of conventional flat planting by 11% or more.