座果灵原名蕃茄灵、促生灵,由上海联合化工厂提供,为白色片剂,每片重量0.11克,有效含量为0.10克。我们在1986年试验的基础上,1987年继续对本地早、温州蜜柑(尾张)保花保果、华盛顿脐橙涂幼果,“四三九”树冠喷洒减少种子等试验,现将试验结果总结如下: 一、材料与方法 在大田试验前,先做了安全有效浓度的小试,然后在“四三九”的盛花、谢花三分之二两个时期用30、40、50ppm的座果灵作树冠喷洒,并用同样浓度的A—4型防落素作比较,一般管理为对照。本地早、温州蜜柑在第一次生理落果前(5月9日),第二次生理落果前(6月23日)进行树冠喷洒,使用浓度同上,以2,4—D12、15、20ppm Fruit Ling Ling, formerly known as Tomato Ling, to promote the soul, provided by the Shanghai United Chemical Plant, a white tablet, each weighing 0.11 grams, the effective content of 0.10 grams. Based on the 1986 trial, we continued our experiments on the local early, Wenzhou Satsuma mandarin (Paulownia) flower preservation fruit, Washington navel orange coated young fruit, “499” canopy spray seed reduction, etc. The results of the experiment are summarized as follows: First, the material and methods Before the field test, first made a safe and effective concentration of small test, and then in the “439” Shenghua, thank two-thirds of the two periods with 30,40,50ppm fruit cradle Canopy spray, and with the same concentration of A-4 type of anti-litter for comparison, the general management as a control. Local early, Satsuma marsh before the first physical drop fruit (May 9), before the second physiological drop fruit (June 23) crown spray, the use of the same concentration to 2,4-D12,15,20 ppm