摘要
采用裂区设计方法,比较了两熟不足区下茬青贮玉米三种不同种植方式的生产力。试验结果表明:郑单958和高油4515采用鲜食玉米收获前7 d在2株鲜食玉米之间的垄台上播种青贮玉米,干物质产量分别达到11.75 t/hm2和10.84 t/hm2,较对照分别降低1.6%和7.2%;其秸秆干物质含量分别达到23.90%和27.03%,较对照提高13.2%和10.1%;其籽粒干物质含量分别达到39.04%和22.61%,而对照没有籽粒产量。两熟不足区下茬青贮玉米采用鲜食玉米收获前7 d在2株鲜食玉米之间的垄台上播种技术,可以实现抢农时、提高营养品质的效果,但应用该项技术一定要注意提高播种质量,确保群体密度。
The study compared the productivity among three different planting patterns of silage corn for the aftercrop in the areas where accumulated temperature is deficiency by the split plot design.The results showed that：by adopting the sowing technology,the dry matter yield of Zhengdan958 and Gaoyou4515 were 11.75 t/hm2 and 10.84 t/hm2,and yield reduction ratio were 1.6% and 7.2% respectively,and their stalk dry matter content were 23.90% and 27.03%,increasement ratio were 1.6% and 7.2% respectively,and their grain dry matter content were 39.04% and 22.61% respectively,and CK no grain.This technology can prolong the growth period and improve nutritional quality.Meanwhile the technology must ensure the sowing quality and enough population density.
出处
《辽宁农业科学》
2012年第5期30-34,共5页
Liaoning Agricultural Sciences
关键词
复种
青贮玉米
种植方式
Double cropping
Silage corn
Planting pattern
