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钙质紫色土稻麦轮作施锌5~10ppm可满足两个轮作周期的锌素营养,使第三季小麦增产4~6%,第四季水稻增产9~11%,表明钙质紫色土稻麦轮作施锌有明显的后效。
Calcareous purple soil rice and wheat rotation for zinc fertilization 5 ~ 10ppm to meet the two rounds of zinc nutrition, the third season wheat yield 4 ~ 6%, the fourth season rice yield 9 ~ 11%, indicating that calcium purple soil Wheat rotation for zinc has obvious effect.