Techniques on Using TDS Growth Regulator to Raise Fruit Bearing Number of Chinese Chestnut Effects of Several Chemical Regulators and Their Combinations on Female Flower Number and Fruit Bearing in Chinese Chestnut Fruit Settings of Taxus chinensis var.mairei in Responding to Different Pollination Types Study on the Genetics and Variation of the Clones Fruit Bearing in Chinese Fir Seed Orchard Application of TDS Plant Growth Regulator on Chinquapin trees