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盛花期喷施腐植酸钠50—500倍液,均不同程度地提高了元帅、陆奥、金冠苹果和安梨的座果率,而气球期则无效(金冠)。在苹果上应用100～250倍液最好,而500倍液效果则较差。在安梨上以50倍液效果较好,其效果随浓度降低而递减。腐植酸钠是一种似激素类物质,具有较高的生理活性。该物质在提高作物和蔬菜产量、提高果树抗病力等方面的效应已被许多研究证明。本试验将其用于提高苹果和梨的座果率上,取得了满意的效果。它是解决某些苹果和梨座果率低的一种新方法。
Full flowering spraying sodium humic acid 50-500 times times, to varying degrees, increased the marshal, Mutsu, Golden Delicious Apple and An Pear fruit rate, while the balloon period is invalid (Golden Delicious). In the application of 100 to 250 times the best apple, 500 times less effective solution. On the pear 50 times better solution, the effect decreases with decreasing concentration. Sodium humate is a hormone-like substance with high physiological activity. The effect of this substance on increasing the yield of crops and vegetables and improving the disease resistance of fruit trees has been proved by many researches. This experiment will be used to improve the fruit rate of apples and pears, and achieved satisfactory results. It is a solution to some apple and pear fruit low rate of a new method.