The Efect of Natural Brassinofide on the W ater Contents and the PhotosyntheticRate of W alnut Leaves EFFECT OF NATRUAL BRASSINOLIDE ON GERMINATION OF PINUS TABULAEFORMIS AND ROBINIA PSEUDOACACIA SEEDS The Efect of Natural Brassinofide on the W ater Contents and the PhotosyntheticRate of W alnut Leaves Effect of Natural Brassinolide on Drought Resistance and Yield of Red FujiApple Effect of Natural Brassinolide on Drought Resistance and Yield of Red FujiApple