【摘要】 结果表明，２，４－二氯苯氧基乙酸（２，４－Ｄ）为控制香荚兰落果的有效药剂。用３０μｇ／ｍＬ溶液在香荚兰初花授粉后３０天喷雾，每隔１０天１次，连续３次，可使香荚兰落果率由３５．４％降低到４．５％，防止落果效果良好，而且该药对香荚兰生育和果荚鲜重、干重及香兰素含量均无不良影响。更多还原

【Abstract】 The effects of various agents with different formulations were exam-ined on pod drop control of vanilla[Vanilla fragrans(Salisbury Ames)]·The results of 1989一1991 from the extended comparative experilnents andthe application to production reveal that 2,4一dichlorophenoxy aceticacid(2,4一D) gave a most satisfactory efficiency to pod drop control ofvanilla,2,4一Dwas sprayed thrice at 30ppln at 10-day intervals about 30days after the primary flowers were pollinated,The pod drop percentagedecreased fron 35.4%to 4.5%,2,4-Dhad a good and consistent effecton pod drop control of vanilla, and no adverse effect was found on thegrowth of vanilla vines as well as on fresh weight, dry weight and vani-llin content of vanilla pods.更多还原