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栗园施硼对板栗空苞率的影响空苞是燕山区影响板栗产量的主要原因之一，据我们在汉儿庄乡上洪寨、张庄子、岔沟三个村调查，空苞率高的单株分别为：１３．６％、１３．１％、１２．７％，据河北省昌黎果树研究所化验结果，迁西、兴隆板粟产区土壤含硼量仅为０．３９６５ｐ...
Chestnut cast chestnut hollow rate of chestnut empty spewing is Yanshan District, the impact of chestnut production is one of the main reasons, according to our Hanzhuang Zhuang Xiang Hongzhai, Zhangzhuangzi, Chagou three villages surveyed, the empty shell rate Were 13.6%, 13.1% and 12.7%, respectively. According to the test results of the Changli Fruit Tree Research Institute in Hebei Province, the soil boron content in Qianxian and Xinglong plate millet fields was only 0.3965p.