行距配置和密度对冬小麦品种河农822群体质量及产量的影响

Effects of Spacing Pattern and Planting Density on Population Quality and Grain Yield of a Winter Wheat Cultivar Henong 822

为研究不同行距配置和密度对小麦群体质量和产量的影响,以冬小麦品种河农822为试验材料,应用裂区设计研究了3种行距配置和4种密度的交互效应。结果表明,行距和密度的互作效应不显著。相同密度下,15 cm等窄行种植的群体总茎数、叶面积指数、干物质积累量和产量基本上最高,20 cm等宽行次之,16.7 cm+16.7 cm+26.7cm三密一稀种植样式最低。4种种植密度下的群体总茎数以高密度最大,随密度降低群体总茎数减少。叶面积指数、干物质积累量和产量以中密度的较高,过大或过小密度的较低。即密度为300万/hm2或420万/hm2基本苗的叶面积指数及干物质积累量>密度为180万/hm2或540万/hm2基本苗。产量水平为300万/hm2基本苗>420万/hm2基本苗>180万/hm2基本苗>540万/hm2基本苗。所以,河农822最佳的行距配置和密度为15 cm等行距×300万/hm2基本苗。

In order to study the effects of spacing form and planting density on grain yield and population quality, an experiment by split plot designs was hold with a winter wheat cultivar Henong 822. The experiment included three spacing forms such as 15 cm,20 cm and 16.7 cm ＋ 16.7 cm ＋ 26.7 cm and four planting density such as 180 × 10^4 basic seedlings per hectare,300 × 10^4 basic seedlings per hectare,420 × 10^4 basic seedlings per hectare and 540 × 10^4 basic seedlings per hectare. The results showed that the interaction between spacing form and planting density was not significant. The grain yield, population total stems number, leaf area index and dry matter accumulation were almost the highest under the treatment of 15 cm,followed by row spacing of 20 cm and 16.7 cm ＋ 16.7 cm ＋ 26.7 cm. On the other hand, the leaf area index, dry matter accumulation and grain yield of 300 × 10^4 basic seedlings per hectare was almost the highest, followed by 420 × 10^4 basic seedlings per hectare, 180 × 10^4 basic seedlings per hectare, and 540 × 10^4 basic seedlings per hectare. The population total stems number increased with the adding of basic seedlings. And the population total stems number of treat of 540 × 10^4 basic seedlings per hectare was the highest,followed by 420 × 10^4 basic seedlings per hectare, 300 × 10^4 basic seedlings per hectare, and 180 × 10^4 basic seedlings per hectare. To get higher yield, the optimum spacing form and density on henong 822 were 15 cm and 300 × 10^4basic seedlings per hectare.