板栗空棚是指板栗刺苞中没有栗实，又称空苞现象。空棚率高是影响我省板栗产量的重要因素之一，据调查，我省板栗产区空棚率一般在7～25％，高的在40％以上。如何降低板要空棚率，已成为我省板栗生产中急需解决的问题。从1992年开始，我们在本省板栗产区进行了降低板栗空棚率的 Chestnut chestnut chestnut chestnut is no chestnut, also known as empty-bract phenomenon. The high shed height is one of the important factors that affect the yield of chestnut in our province. According to the survey, the shed shed rate in our province chestnut production is generally 7-25% and the height is above 40%. How to reduce the board to empty shed rate has become an urgent need to solve the problem in our province chestnut production. Since 1992, we have reduced chestnut shed capacity in our chestnut producing areas