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随着小麦栽培技术的提高和肥水等条件的改善,小麦产量逐年提高。但是生产中常见一些地块的小麦前期长势很好,后期亩穗数、德粒数都达到产量要求,到收获时却籽粒瘦秕,不饱满,产量较低。造成这种现象的原因是多方面的,归纳起来主要有以下几条。一、环境因素的影响及对策 (一)影响籽粒灌浆成熟的环境因素主要有 1.温度适宜灌浆的温度为20～22℃。温度过高或过低都会影响灌浆进程。若温度高于25℃,灌浆过程缩短,干物质积累提前结束,粒重小。若温度降到12℃以
With the improvement of wheat cultivation techniques and the improvement of fertilizers and other conditions, wheat production has been increasing year by year. However, the production of some common plots of wheat grew well in the early stage, the number of acres per acre later, the number of German particles have reached the yield requirements, but the harvest when the grain lean, not full, lower yields. The reasons for this phenomenon are many, summed up the following several. First, the environmental factors and countermeasures (A) the impact of grain filling mature environmental factors are 1. Temperature appropriate filling temperature of 20 ~ 22 ℃. Temperature is too high or too low will affect the filling process. If the temperature is higher than 25 ℃, filling process shortened, dry matter accumulation ended early, grain weight small. If the temperature drops to 12 ℃