华北农学报Issue(z1)：314-319,6.
种植密度和施氮对玉米×墨西哥大刍草杂种饲草产量与饲用价值的影响
Effects of Different Planting Density and Nitrogen Application on Forage Yield and Feeding Value of Zea mays × Z.mexicana Hybrid
摘要
Abstract
The effects of planting density and nitrogen application on the Z.mays ×Z.mexicana hybrid forage yield and feeding value traits were studied by the means of using a split plot experiment with two factors .The results show that effect of density ,nitrogen application and the interactions between them on the forage yield and feeding value traits were significant .The lowest and highest planting could decrease forage yield ,but high nitrogen applica-tion improve forage yield.The crude potein content,ether extract content,water soluble carbohydrate content ,rela-tive feeding value of the Z.mays ×Z.mexicana hybrid were all increased both with the decrease of planting density and the increase nitrogen application level , while acid detergent fiber and neutral detergent fiber content were de-creased .The crude potein , ether extract , water soluble carbohydrate , acid detergent fiber , neutral detergent fiber yields of the Z.mays ×Z.mexicana hybrid with the increase of planting density and nitrogen application which showed the change of "low-high-low"and rising gradually ,respectively .We can adjust planting density and nitrogen rate to take advantage of the interaction between them to improve Z.mays ×Z.mexicana hybrid forage yield and feeding value .In conclusion ,planting at 40 000 plants per hectare and applying 450 kg nitrogen per hectare were best management practices ,based on the results of this study .关键词
玉米×墨西哥大刍草/密度/施氮/产量/饲用价值Key words
Zea mays ×Z.mexicana hybrid/Density/Nitrogen application/Forage yield/Feeding value分类
农业科技引用本文复制引用
冯云超,余志江,霍仕平,张兴端,张健,晏庆九,向振凡,张芳魁,邹永翠..种植密度和施氮对玉米×墨西哥大刍草杂种饲草产量与饲用价值的影响[J].华北农学报,2013,(z1):314-319,6.基金项目
重庆市应用开发计划项目（CSTC，2013yykfA80010）；国家“十二五”科技支撑计划项目（2011BAD36B01）；重庆市良种创新工程项目 （）
