Using method of integral regression, effect of varying amounts per factor on annual yield and period of positive or negative effect during each growing stage of grasses were given.
用积分回归法分析了牧草生长发育各时段单位因子变化量对年产量的影响程度及正负效应时段。
Using method of integral regression, effect of varying amounts per factor on annual yield and period of positive or negative effect during each growing stage of grasses were given.
用积分回归法分析了牧草生长发育各时段单位因子变化量对年产量的影响程度及正负效应时段。
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