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间作套种时作物搭配的原则是?

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①选择适宜的作物种类和品种,根据不用作物的形态、生态差异,以及不同作物的生长发育互利互补作用, 尽量发挥互补作用, 缓解竞争, 品种选择要互相适应,互相照顾。②确定适当的搭配方式和比例,确定带宽、行比、行向、作物间间距等。各作物带宽本着“高要窄,矮要宽”的原则。③合理密植,适当增加密度,合理的群体密度,主作物不减产或少减产,增加副作物。④适时播种,特别注意套种作物的播期。 ⑤运用综合的田间管理措施, 处理好复合群体内的争水、争肥、争光的矛盾。

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