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简述积温学说的主要内容。

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2021-12-27 16:15
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正确答案
根据多年的研究和实践,积温学说一般可归纳为三个基本论点:(1)、在其他条件得到满足的前提下,温度对作物的发育起着主导作用;且假定发育速度―温度的关系为线性关系。(2)、作物开始发育要求一定的下限温度;根据近年来的研究结果,在高温季节完成的发育期,还存在有上限温度问题。实际上,从生物生育存在三基点温度角度出发,也应当有上限温度。(3)、作物完成某一阶段的发育,需要一定的积温。

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