缩节安(DPC)是一种新型的植物生长调节剂(1—1—二甲基呱啶■氯化物)。近年来研究使用较多,在我国,已在棉花生产中试用了几年。据报道[1][2],缩节安能促进棉株光合同化能力,抑制徒长,增加霜前花,同时又能缩短节间,形成较好株型,合理使用,可使皮棉增产12.5%左右。更因其有成本低 Dian Dian (DPC) is a new plant growth regulator (1-1-dimethyl piperidine ■ chloride). In recent years, more research is being used in our country, which has been tested in cotton production for several years. It has been reported [1] [2], the reduced safety can promote the ability of cotton photosynthesis, inhibition of leggy, increase the frost before the flower, but also shorten the internode, forming a better plant type, rational use, lint yield 12.5 %about. More because of its low cost