摘要
青贮玉米产量及品质受多重因素影响,其中种植密度具有主导性作用,为探讨两者间的关联,共选取6个市面上较常见的青贮玉米品种,通过改变种植密度的方式,研究其在产量和营养价值方面的具体表现,以期给青贮玉米种植工作提供参考。结果表明,在种植密度增加的条件下,生物产量密度有同步增加的变化趋势,以‘E青贮2号’‘F青贮368’增产最为显著;且在种植密度加大后,青贮玉米的收获天数有所延长,高密度较低密度而言延长3.2%~10.6%,茎粗随种植密度的增加而减小,持绿性随种植密度的增加而降低;营养价值方面,种植密度的增加伴有粗脂肪含量降低的变化趋势,中性及酸性的洗涤纤维则具有提高的变化趋势。
The yield and quality of silage maize are affected by multiple factors,among which planting density plays a leading role.In order to explore the relationship between the planting density and maize yield,six common silage maize varieties were selected to explore their specific performance in yield and nu‐tritional value by changing the planting density so as to provide reference for silage maize planting.The re‐sults showed that the increasing of planting density was accompanied by the increasing of biological yield,which No.2 E maize and F368 maize increased significantly.After the increasing of planting density,the har‐vest days are extented.The harvest day of high planting density is extented 3.2%~10.6%than the low plant‐ing density.The stem diameter is decreasing with the increasing of planting density,the stay-green ability is decreasing with the increasing of plant density.The increasing of planting density was accompanied by the decreasing of crude fat content,while the neutral and acidic detergent fiber showed an increasing trend.
作者
管其锋
GUAN Qifeng(Central Agricultural Broadcasting School Linshu branch school,Linyi,Shandong 276700)
出处
《热带农业工程》
2021年第4期15-18,共4页
Tropical Agricultural Engineering
关键词
青贮玉米
种植密度
生物产量
营养价值
silage corn
planting density
biological yield
nutritional value
