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小麦抽穗后,每亩地穗数已基本成定局,但穗粒数和粒重还有较大变化,因为籽粒中积累的淀粉大约有三分之二来自于开花以后的光合产物,所以这一阶段是决定粒重的关键时期。管理方向是保根、保叶、延长叶片光合高值持续期,延缓衰老,提高粒重。浇好开花水或灌浆水。小麦开花至成熟期的耗水量占整个生育期耗水总量的四分之一,需要通过浇水满足供应。干旱不仅会影响粒重、抽穗,还会影响
After heading, the number of ears per acre is almost a foregone conclusion. However, the number of kernels per spike and the weight of grains vary greatly. Since about two thirds of the starch accumulated in the grains comes from photosynthate after flowering, The stage is a crucial period for deciding grain weight. Management direction is Paul root, Paul leaves, extend the duration of photosynthetic high leaves, anti-aging, improve grain weight. Sprinkle flowering or grouting water. Water consumption from flowering to maturity of wheat accounts for one quarter of the total water consumption during the whole growth period and the supply needs to be satisfied by watering. Droughts will not only affect grain weight, heading, but also affect