新型植物生长调节剂多效唑钾盐在双季超级杂交稻上的应用效果

选用超级杂交早稻淦鑫203和晚稻五丰优T025,于秧苗期喷施新型植物生长调节剂多效唑钾盐,并以多效唑及清水为对照,考查了株高、秧苗素质、产量及其构成因素等,结果表明:早、晚稻喷施多效唑钾盐和多效唑处理株高较喷施清水处理分别降低41.71%、47.32%和28.41%、26.97%,单株产量分别增加34.83%、15.69%和37.16%、5.44%;早、晚稻喷施多效唑钾盐秧苗素质及产量构成指标也存在较强的优势;新型植物生长调节剂多效唑钾盐对水稻具有较好的控高增产效果。

Application Effects of New-type Plant Growth Regulators Paclobutrazol Potassium on Double-season Super Hybrid Rice

The early and late super hybrid rice varieties Ganxin203 and WufengyouT025 were used as experimental materials. The new-type growth regulator paclobutrazol potassium was sprayed at their seedling stages, and paclobutrazol and clear water as the control. And then the plant height, seedling quality, yield and components were checked. The results were as follows： Plant heights of the treatment of paclobutrazol potassium and paclobutrazol decreased by 41.71% and 47.32% in early rice, and 28.41% and 26.97% in late rice, respectively, when compared with that of the treatment of clear water. Per plant yields of the treatment of paclobutrazol potassium and paclobutrazol increased by 34.83% and 15.69% in early rice, and 37.16% and 5.44% in late rice, respectively. There was also superiority in seedling quality and yield components in both early and late rice with the treatment of paclobutrazol potassium treatment. So the new-type growth regulator paclobutrazol potassium brought good results of plant height control and yield increase in rice production.