鄂北地区稻茬麦不同播种方式和播种量效益分析

为了解不同播种方式和播量对稻茬小麦生产效益的影响,于2016—2018年度在湖北省随县农作物试验示范展示基地进行稻茬小麦不同播种方式和播量试验,分析不同播种方式和播量对稻茬小麦生长发育、抗逆性和产量的影响。结果表明,免耕机械条播用种量较小,小麦出苗率较高,生育进程较快,抗逆性较强;播种量与出苗率和抗逆性成负相关,与各时期茎蘖总数成正相关,与生育期不相关;免耕机械条播更适合鄂北地区稻茬麦生产,与160 kg/hm~2的播量为最理想组合。

Benefit Analysis of Different Sowing Ways and Amount of Rice-stubble-wheat in Northern Hubei

In order to understand the effects of different sowing methods and sowing rates on the production efficiency of Rice-stubble wheat, the effects of different sowing methods and sowing rates on the growth, development, stress resistance and yield of Rice-stubble wheat were studied in the demonstration bases of crop experiments in Suixian County, Hubei Province, in 2016-2018. The results showed that no-tillage mechanical sowing required less seeds, higher emergence rate of wheat, faster growth process and stronger resistance; seeding amount was negatively correlated with emergence rate and resistance, positively correlated with the total number of tillers in each period, but not with the growth period. No-tillage mechanical sowing is more suitable for Rice-stubble wheat production in northern Hubei, and the best combination with 160kg/hm² seeding rate has remarkable economic and social benefits.