【摘要】 对4个实行冬季重剪的桑树品种,在夏蚕5龄盛食期采取中间采伐,即剪去枝条1/2.结果表明,秋叶质量明显提高,而秋叶产量与桑品种有关,桐乡青、小冠桑、新一之濑比对照增产10%以上,嘉陵9号的产叶量则大幅度下降.因此,选择耐剪伐的桑品种实行中间采伐,不仅可提高秋叶质量,为养蚕提供稚蚕用桑,而且还可提高桑叶产量.更多还原

【Abstract】 To the four mulberry vaireties having been taken winter heavy pruning. We should take middle pruning during the 5th instar of the larval stage of summer silkworms. that is to say to cut off half of the branch. It was shown that the quality of mulberry leaves is raised largely in autumn and that the output has something to do with mulberry variety. Tong-Xiang Qing、Xiao-Guan-Shang and Xin-Yi-Zhi Lai rise at Least 10 percent as for the contrast. but the output of Jia-Ling number 9 cuts down. Sowe can say: to not only raise the quality of mulberry leaves but also raise the output we should take middle pruning to hose mulberry varieties which can endure pruning.更多还原