活力素在杏树上的应用研究

Study on Application of "Huolisu"on Apricot

花前 2周树体喷施 70 0～ 1 1 0 0倍活力素 ,可不同程度地提高杏树的雌蕊完全花的比率 ,其中以 90 0倍的效果最好 ,两年平均可育花提高 1 60 % ,由于可育花比例的增加 ,减轻了杏树的第一次生理落果。花期和盛花后 4周叶面喷施 5 0 0倍活力素可以显著地降低杏树的第二次生理落果 ,降幅度达 3 4.2 % 。

Research results showed that spraying 'Huolisu' to the trees with 700～1100 times two weeks before flowering can increase the rate of flowers with complete pistil in varyis degrees and the efficiency to spray 900 times is best. The average of fertile flower increased 160% during the two years. The first physiological premature drop of apricot was lightened. Spraying 'Huolisu' 500 times to the leaves during the date of flowering and four weeks later of blooming respectively can outstandingly decrease the second physiological premature drop within the range of 34.2%.