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在一般情况下,板栗的空壳率在15—45％,高的达90％以上,而严重影响了产量。据试验观察,板栗空壳主要是由受精卵的过早滞育所致,因此增施硼肥以促进授粉受精活动,增强爱精卵的生长发育能力,是提高结实率获取高产的重要措施。硼肥的施用方法是:为了减少当年的空壳率,可在春季的3—4月施用,并结合灌水防春旱,增加硼
Under normal circumstances, chestnut shell rate of 15-45%, up more than 90%, and seriously affected the yield. According to the experimental observation, chestnut shell is mainly caused by premature diapause of fertilized eggs. Therefore, the application of boron fertilizer to promote pollination and fertilization and enhance the ability of sperm growth and development is an important measure to increase the seed setting rate and obtain high yield. Boron fertilizer application method is: in order to reduce the shell rate of the year, it can be applied in spring from March to April, combined with irrigation to prevent drought and increase boron