桑园立体栽培技术研究

为提高桑园空间与光能利用率，在桑园采用不同的桑树品种搭配、进行高低立体交叉栽植，合理调整桑树单株与群体、乔木桑与灌木桑之间的生长关系；科学地采伐与用叶，上层与下层结构的立体开发，利用生长时差、搞好桑园的养用结合。挖掘桑园栽培上的“漏损”潜力，建立高效率的复合群体，形成配套的立体栽培技术模式。促使增株增条快，投产早，成本低，产出高；产叶量比同等栽植密度的普通桑园第１年至第４年（春）分别增长２８．１５％、３５．８２％、３８．４５％、３６．９０％。

STUDIES ON SPACE-PLANTING CULTIVATION TECHNOLOGY IN MULBERRY GARDEN

In order to increase solar energy utilization ratio in mulberry gardens, mulberrytrees of different varieties were planted alternately to regulate the growth relationshipbetween individual trees and tree population,between arboreous and bush mulberries.Leaves were harvested and shoots were pruned reasonably to allow a favorable develop-ment of both high and low plants,Both cultivation and harvesting of mulberries were ob-tained by utilizing different developing stages of the trees.A comprehensive mulberrypopulation with high efficiency was established.The corresponding cultivation technolo-gy was also studied。In the space-planted mulberry garden,plants and shoots increasedfaster,leaves were harvested earlier,cost was low,output was high。The leaf yield inspring during the lst to 4th year after planting was 28.15%,35.82%,38.45%and36.90%higher than the control respectively.