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(一)引言 长期以来,在农业科技工作和农业气象工作上,都广泛地应用积温这一热量指标。用积温来反映作物的生长发育速度,当然比用生育期天数或叶龄要好;但实践指出:对某一作物完成某一生育阶段所需的积温来说,无论是活动积温或有效积温,都存在着很大的地区差异和时间差异。如何解决积温的这种不稳定性,是农业气象工作上急待解决的一个问题。下面谈谈个人对这个问题的一点看法,藉与有关方面讨论。
(A) Introduction For a long time, the calorific value of accumulated temperature has been widely used in agricultural science and technology and agricultural meteorology. Accumulated temperature to reflect the rate of crop growth and development, of course, than the number of days of growth or leaf age is better; but the practice points out: for a crop to complete a certain stage of the accumulated temperature, both active accumulated temperature or effective accumulated temperature There is a big difference between regions and time. How to solve this instability of accumulated temperature is an urgent problem to be solved in agrometeorological work. Here to talk about personal views on this issue a bit, by discussing with the parties concerned.