To research the crop potential productivity can find the obstacles of improveing yield and can offer grounds for programming agricultural production.The paper computed the temperature and climate potential productivity of Changwu district of ten years;compared with practical yield,winter wheat and spring maize being put as example.The result show that:the wheat s average heat potential productivity was 6910.5kg/hm+2 in studied ten years of the district ,that of maize was 10663.4kg/hm+2,variance between year...
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