化学药剂防止龙眼花穗冲梢技术研究

Technology of preventing the blossom clusters of longan from forming leaflets with chemical reagent

为探讨提高龙眼花穗发育质量及座果产量的技术途径 ,采用正交设计的方法 ,开展防止龙眼花穗冲梢的药物试验。结果表明 ,防止龙眼花穗冲梢的药物处理最佳时期为花穗主轴伸长 6～9cm、花穗小叶处于展叶期 ;试验所设的 9个药物处理中 ,以处理 4为最好 ,即当花穗伸长 6～ 9cm时 ,树冠喷施 30 0 mg· L-1乙烯利 +30 0 mg· L-1青鲜素 +34 0 mg· L-1比久 +2 0 0 mg· L-1多效唑 +0 .1%硼砂 +0 .2 %硫酸锌的混合药液 ,枝梢抽生纯花穗的成穗率最高 ,达 77.3% ,该处理花穗。

The experiment was conducted as a orthogonal design to study the methods of increasing the quality of blossom clusters and the yield of setting fruit.The results showed that the optimum period of preventing blossom cluster from forming leaflets was when the major axes of blossom clusters grew to 6-9 cm and the leaflets of blossom clusters were expansing.When the blossom clusters grew to 6-9 cm, the coma was sprayed by the common chemical(CEPA 300 mg·L -1 +MH 300 mg·L -1 +B 9 340 mg·L -1 +PP 333 200 mg·L -1 +0 1%Na 2B 4O 7+0 2%ZnSO 4),the percentage of pure blossom cluster\|bearing branchs was the highest( 77 3%),the comprehensive characters of blossom and fruit clusters also showed the best.