飼料供应不足或者飼料品質优劣,直接影响蚕儿的发育,大面积种植蓖麻所花的人力,肥力都是比較大的,容易引起管理不周,形成低产,致使蓖麻叶細长而薄,易于失水老化,就会使其养分不良,蚕儿吃后就有影响,因此,就要縮小栽培面积,搞高产,这样集中人力肥力,搞好高产蓖麻,既可解决用 Lack of feed or the quality of feed, a direct impact on the development of the crap, large-scale plant castor spent manpower, fertility are relatively large, easily lead to poor management, the formation of low-yield, resulting in castor leaf thin and thin , Easy to dehydration and aging, it will make its malnutrition, caterpillars have an impact after eating, it is necessary to reduce the cultivation area, engage in high-yield, so concentrate on human fertility, improve high-yield castor bean, can solve