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板粟属雌雄异花同株树,雌雄花比例为1:2349,据科学测定,除去90％以上雄花,仍可满足授粉之用, 河北省林业厅和省技术推广站组织有关技术人员在板栗主产区迁西、迁安等地区开展了为期3年的“板粟疏雄增产技术研究”,试验结果表明,疏雄90％～95％,可增产42％以上,是一项投资少、效益好、操作简便,容易推广的新技术。疏雄时间,是在混合花序出现时(北方
Plate Prunus dioecious plants, male and female flower ratio of 1: 2349, according to the scientific test, remove more than 90% of male flowers, pollination can still meet the use of the provincial Forestry Department and the provincial technology promotion station organized technical staff chestnut Production areas Qianxi, Qian’an and other regions to carry out a 3-year “board millet sparse male production technology research”, the test results show that sparse male 90% to 95%, 42% more yield, is a less investment and good efficiency , Easy to operate, easy to promote new technologies. Sparse male time, is the emergence of mixed inflorescences (North