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一般认为:叶面喷施“九二○”有促进珍A、珍B提早抽穗开花的作用,所以把“九二○”当作花期调节剂使用。为了进一步弄清“九二○”的作用,今年三月我们在海南岛对珍A、珍B叶面喷施“九二○”(浓度均为20ppm),进行了较全面的观察试验,试验结果如下: 一、叶面喷施“九二○”对花期的影响:分别选择处于破口、孕穗阶段的珍A、珍B各数根,挂牌作标记。于同一天(3月18日)进行叶面喷施“九二○”。喷后逐日观察记载。结果发现:喷时处于破口阶段的珍A,喷与未喷的同在3月19日抽穗;喷时处于孕穗阶段的珍A,喷与未喷的亦同在3月25日抽穗;喷时处于破口阶段的珍B,喷与未喷的同在3月19日抽穗;喷时处于孕穗阶段
Generally believed that: foliar spraying “920” promoting Jane A, Jane B early heading and flowering, so the “920” as a flowering regulator use. In order to further clarify the role of the “920” project, we conducted a full-scale observation and test in March this year on the foliage of Zhen-A and Zhen-B of Hainan Island with the “920” (both at a concentration of 20ppm) The results are as follows: First, the foliar spraying “920” on the flowering of the impact: respectively, at the breach, booting phase of Jane A, Jane B the number of roots, listed as a mark. On the same day (March 18) for the foliar spray “920”. Observed after the spray daily record. The results showed that: when sprayed at the breaking stage of Jane A, spraying and not spraying same March 19 heading; spraying booting phase in the Jane A, spray and not spray also with March 25 heading; spray At the breaking stage of Jane B, spraying and not spraying the same heading in the March 19; spray in the booting stage