高密度及种植方式对夏玉米秸秆饲用品质的影响

Effects of high densities and planting patterns on straw feeding quality of summer maize

为研究不同种植密度及种植方式对夏玉米秸秆饲用品质的影响,采用夏玉米品种‘郑单958’、‘先玉335’,设置4个种植密度、2种种植方式(等行距、宽窄行),分析评价在不同种植密度及种植方式下2个玉米品种秸秆饲用品质。结果表明:在不同种植方式下,种植密度对粗纤维、酸性洗涤纤维、中性洗涤纤维、半纤维素含量影响差异不显著,对粗蛋白含量影响显著。综合比较,在设置的4个密度条件下,2个试验品种在105 000株/hm2种植密度下具有相对较低的纤维含量和较高的粗蛋白含量。

In the study two summer maize varieties(‘Zhengdan 958’,‘Xianyu 335’)were used to study the effects of four densities and two planting patterns(equal row,wide and narrow rows)on straw feeding quality of summer maize,as well as to evaluate straw feeding quality of summer maize under those cultivation conditions.The results indicated that under the planting pattern of equal row the density significantly affected crude fiber,neutral detergent fiber and crude protein;however,under the planting pattern of wide and narrow row,density only significantly influenced crude protein.It was also found that relatively lower fiber content and higher crude protein content appeared in these two summer maize varieties under the planting density of 105 000 plants per hm2.In conclusion,compared with the planting pattern of equal row,the planting pattern of wide and narrow row was recommended for high density cultivation because of higher straw crude protein content and lower fiber content under this pattern.