夏秋季桑树枝条的形态特征与采叶程度的关系

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依桑树枝条的形态特征为采叶依据,按拉丁方排列,设4种不同采叶程度,试验结果表明,自下而上采至枝条条半木栓化部位,皮色褐绿交界以一的叶片是比较合理的,这种采叶方法容易确定采叶程度,便于掌握,采叶方便,无需要每次采叶时要估计采几分之几的麻烦,而且准确,秋叶和第2年春叶产量也比其他采用高,更重要的是每次采叶后所保留的叶片是光合作用效率最强的,使“养树”与“用叶”的矛盾达到统一,为夏秋季的合理养蚕布局提供
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