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报道了6个处理:A、花蕾直径3~5 mm时疏花序;B、第一次生理落果结束后,在果实横径0.5~1.0 cm时疏果;C、A+B;D、第一次生理落果结束后,果实横径2~3 cm时疏果;E、不疏蕾不疏花,第二次生理落果结束后、果实横径3~5 cm时疏果;CK、不疏蕾和花、不疏果,只疏畸形果、病虫果,对沙田柚坐果率、产量和商品果率的影响。结果表明,除处理B比D、CK显著提高坐果率,处理D、E显著提高商品果率以外,其它各处理间及各处理与CK间的坐果率、株产量与商品果率无显著差异。因此沙田柚的疏果宜在第一次生理落果结束后、果实横径约0.5~1.0 cm时进行。
Reported six treatments: A, flower buds 3 ~ 5 mm diameter flowering sequence; B, after the first physical drop fruit, the fruit diameter 0.5 ~ 1.0 cm thin fruit; C, A + B; D, the first After the end of the second physiological and fructification, the fruit diameter of 2 ~ 3 cm when the thinning fruit; E, no thinning not Shuhua, after the second physiological drop fruit, fruit diameter 3 ~ 5 cm thinning fruit; CK, And flowers, not thinning, only sparse deformity fruit, fruit and insect pests, the fruit of Shatian pomelo yield, yield and commodity fruit rate. The results showed that there was no significant difference in fruit set rate, yield and fruit rate between treatments and CK treatments except that treatment B and D significantly increased fruit set rate and treatment D and E significantly increased the fruit yield. Therefore, the thinning of Shatian pomelo fruit should be the first physiological drop fruit after the fruit diameter of about 0.5 ~ 1.0 cm when.