不同的农作物品种,在整个生育期内,要求有一定的积温总量。用积温总量去合理安排种植品种,要比用品种生育期准确可靠。由于同一品种在不同生态条件下播种,因温度条件不同,成熟会出现很大差异,单纯以一个地区品种生育期为依据来使用品种的笼统概念,往往会造成积温少的地区成熟不了,积温多 Different crop varieties, throughout the growing period, require a certain amount of accumulated temperature. The total amount of accumulated temperature to a reasonable arrangement of planting varieties, growth period than the varieties of accurate and reliable. As the same species sown under different ecological conditions, due to different temperature conditions, there will be a big difference in maturity, simply based on the development of a region breed to use a general concept of variety, often result in less accumulated temperature area can not mature, and more accumulated temperature