"控梢灵"对龙眼控梢促花效应的初步研究

用不同浓度“控梢灵”处理龙眼枝梢，并对龙眼枝梢生长情况、成花、产量进行调查．试验结果表明：“控梢灵”控梢作用显著，能提高龙眼的成花率，增加产量．连续喷2次“控梢灵”，对适时秋梢，成花率86％．95％．与对照比较增产111．36％～261．02％；对1～5cm的冬梢，成花率80％～90％，与对照比较增产78、41％～296.61％，随着“控梢灵”浓度增加其抑制作用加强，花穗的抑制过强，长度过短，影响产量．冬梢的长度和成熟度对花穗长度、产量有很大影响、“控梢灵”的抑制作用受大气温度、湿度的影响，低温、干旱的冬季抑制作用强，高温、多雨的冬季抑制作用弱。

The effect of spraying "Kongshaoling" on the longan

The different concentration of Kongshaoling was sprayed on longan (Dimocarpus Longan Lour.). The result showed that Kongshaoling had a notable inhibition to the shoots of longan, and could promote flowering, and elevate the yield. The formation flowering rate of autumn shoots was from 86% to 95% and the yield increased from 111.36% to 261.02% compared to uncontrolled treatment. The formation flowering of winter shoots was from 80% to 90% and the yield increased from 78.41% to 296.61% compared to uncontrolled treat. The higher the concentration of Kongshaoling, the stronger the inhibition. The length and maturity of winter shoots could affect the quality of the flower cluster and the yield. During the stage of the flower bud differentiation, the temperature and humidity would affect the inhibition of Kongshaoling to longan, the inhibition would be strong at a low temperature and drought winter, on the contrary, the inhibition will be faint.