多效唑是一种高效的植物生长调节剂,对水稻生长具有很强的抑制作用。我们试图用它作为一种化调药剂以调控水稻栽培株型。通过三年试验,取得一定效果,初步结果报告如下。 材料和方法 1984、1985年,供试品种有植株较高的赣化2号、汕优3号和汕优63,株高中等的IR_(24)和植株较矮的香血糯。药剂浓度分100、200、300、400、500ppm五种,以喷清水为对照,均于倒五叶期喷药,喷药液量每亩60 Paclobutrazol is an efficient plant growth regulator that has a strong inhibitory effect on rice growth. We tried to use it as a chemotactic agent to regulate plant type in rice. After three years of trial, achieved some results, the preliminary results are reported as follows. MATERIALS AND METHODS 1984 and 1985, the tested cultivars included Ganzhong 2, Shanyou 3 and Shanyou 63 with higher plant height, IR_ (24) with medium plant height, and Xiangxunuo with shorter plants. Pharmacy concentration of 100,200,300,400,500ppm five kinds of spray water as a control, were sprayed in the inverted five-leaf period, the amount of liquid spray 60