论文部分内容阅读
农作物在生长发育过程中所需要的其它因子都得到基本满足的条件下，它才能完成某个或全部生育期。与此同时还需要有一定的热量，这个热量通常是用相应时段内逐日平均气温的累积值表示的，而这个累积温度则称为积温。积温可分为两种：一种是活动积温。另一种是有效积温。这两种
Crops can fulfill some or all of their growth stages provided that other factors required for growth and development are substantially fulfilled. At the same time also need to have a certain amount of calories, the calories are usually the average daily temperature of the corresponding value of the cumulative mean value, and the cumulative temperature is called accumulated temperature. Accumulated temperature can be divided into two kinds: one is the activity accumulated temperature. The other is effective accumulated temperature. These two