桑树生长与合理采桑模拟研究

经过调查证实全年桑树的自然生长符合LOGISTIC生长方式 ,据此可把桑树鲜物质生长过程分为快速增长期、产量形成期和生长平衡期。为获得最大产量 ,提出尽早进行夏伐和疏芽定条 ,减少夏蚕饲养量 ,平衡秋蚕饲养比例 ,适当提前饲养秋蚕 ,并根据不同生长阶段桑树补偿能力的大小 ,确定病虫防治指标。

Studies on the Mulberry Growth Progress and Rationality of Leaves Harvest

The natural growth of mulberry in a whole year follows Logistic model,which was verified by investigation day by day through a few years.Based on these results,the growth of whole crude materials can been divided into three periods:speedy growth,yield forming and growth balance.In order to obtain maximum yield, summer cutting and shootlet thinning, reduced amount of summer silkworm rearing and proper adjusted amount of autumn silkworm rearing are all the efficient measurements.Pest control threshold should be determined according to the tree compensatory capability in different growth stage.