夏大豆玉米不同带状复合种植模式及不同生育时期喷施“海藻博士”对玉米产量的影响

Effects of Different Belt Compound Planting Patterns of Summer Soybean and Maize and Spraying‘Doctor Seaweed’at Different Growth Stages on the Yield of Maize

玉米-大豆带状复合种植技术具有保证玉米产量的前提下,提高大豆产量的作用,其田间配置直接影响玉米生长发育及产量。通过比较不同玉米大豆带状复合种植模式对玉米产量的影响,筛选出适宜江苏省的种植模式;同时研究了不同玉米生育期喷施“海藻博士”对玉米产量等相关性状的影响。结果表明,采用4//4玉米“品字型”种植模式结合在三叶期、拔节期、抽穗扬花期喷施3 750 g/hm^(2)海藻博士水剂,对玉米产量相关性状和生物量分配效果最佳,产量可以达到14 087.2 kg/hm^(2),百粒重达到37.4 g。

Maize-soybean belt intercropping system compound planting mode is conducive to securing maize yield,and improving soybean yield.The field configuration directly affected maize growth and yield formation.We analyzed the effects of different planting patters on the maize yield-related traits to find the optimal treatment of maize-soybean in Jiangsu Province.At the same time,the effect of“Doctor Seaweed”spraying on maize yield-related traits were studied at different growth stages.The experimental results showed that using the 4/4 maize‘品’planting mode combined with spraying 3750 g/hm^(2) of‘Dr.Seaweed’at the trefoil stage,jointing stage,and heading and flowering stage had the best effect on maize yield related traits and biomass allocation,with 14087.2 kg/hm^(2) yield and 37.4 g 100-grain weight.