创新种植模式对夏玉米生长发育和产量的影响

选用生产上推广面积最大的夏玉米品种之一郑单958作为试验材料,在7.5万～10.5万株/hm2的高密度种植下,采用每穴单株对称、单株三角留苗和双株三角留苗3种种植模式,研究不同种植模式对玉米产量、植株和籽粒干物质积累、穗部等性状的影响及变化趋势。结果筛选出7.5万株/hm2的双株三角留苗新模式下栽培产量最高,为夏玉米创新栽培模式提供了理论依据。

Effects of Innovation Cropping Patterns on Growth and Yield of Summer Maize

The summer maize varieties Zhengdan 958,which is one of the most popular production,was selected as test materials.In the high-density planting such as 75 000-105 000 plants/hm2,the use of three kinds of cropping patterns were single symmetry plant each hole,single-strain with triangular model and double-strain with triangular model.The effect and the related changing trends of the maize yield,plant and grain dry matter accumulation and the other characters of panicle from the different cropping patterns were studied.The results showed that the maize planted in the planting density of the 75 000 plants/hm2 and the double-strain with triangular model had the highest yield,providing theoretical basis for innovation and cultivation of maize model.