小麦粒重受综合因素的影响,气象条件是一个重要的因素。但在一定的气象条件下,整个栽培管理措施、特别是管理不当引起贪青晚熟和早衰,都会严重地降低粒重,对小麦产量带来不可估量的损失。贪青与小麦粒重贪青对小麦粒重影响很大。1977年我校试验田土壤中氮、磷比例失调,植株体内糖与硝态氮之比变小。据孕穗前测定结果,植株含 Wheat grain weight is affected by a combination of factors, meteorological conditions is an important factor. However, under certain weather conditions, the entire cultivation management measures, especially the improper management, will cause severe late blooming and premature aging, which will seriously reduce the grain weight and bring immeasurable losses to the wheat yield. Greed and grain weight Greediness has a great impact on grain weight. In 1977, the proportions of nitrogen and phosphorus in the soils in our experimental field were imbalanced, and the ratio of sugar to nitrate in the plants became smaller. According to the results of booting before test, plants contain