不同保果处理对贡柑坐果及叶片营养的影响研究

Study of different measures of fruit protecting on sit-fruit effects and leaves nutrition of citrus Gonggan

针对广东贡柑自然着果率低及滥用生长调节剂保果等问题进行谢花后不同保果处理研究的结果显示,喷施GA31次+保果素1次的座果率显著高于连续喷施GA32次;喷施保果药剂+环割处理的座果率显著高于未环割处理,其中以喷施GA31次+保果素1次+环割处理的座果率和产量最高。同时指出,各种保果措施均能提高贡柑春梢叶片的氮、钾营养含量,但对贡柑的果实品质没有影响。

Due to the low percentage of fruit setting and abusing growth regulators on Citrus reticulata Blanco var. gonggan, different measures were applied to fruit protecting after the flower withering. The results showed that the percentage of fruit setting with the measure of GA3 once plus fruit bearing accelerator once was higher significantly than that of applying GA3 twice, and the percentage of fruit setting with the measure of medicament plus girdling was obviously higher than that of none girdling. The percentage of fruit setting and the yied with the measure of GA3 plus fruit bearing accelerator and girding was the highest. Additionally, all measures could enhance the N、K contents in the leaves and had no adverse effect on the fruit quality.