矮壮素在棉花上施用,增产效果明显。据试验,矮壮素喷株处理增产9.6—14.6％。喷矮壮素,不但能高产,而且还能继续提高种植密度。在高水肥高密度条件下,不喷矮壮素,以每亩1.5万株产量最高,比对照每亩1万株增产5.4％;喷矮壮素后,每亩密度1.8万、2万、2.5万株的,分别比对照增产14.6％、12.4％、13.4％。试验表明,密度每亩1.5万株,喷矮壮素后,平均单株结铃5个,蕾铃脱落率44％,霜前花率 CCC applied on cotton, yield-producing effect is obvious. According to the test, chlorothalonil spray treatment yield 9.6-14.6%. Spit chlorin, not only high yield, but also continue to increase the planting density. In the high water and fertilizer high density conditions, do not spray CC, the highest yield of 15000 plants per acre, compared with the control of 10,000 plants per acre yield 5.4%; spray chlormequat, the density of 18000 acres, 20,000, 2.5 Ten thousand strains increased yields by 14.6%, 12.4% and 13.4% respectively over the control. Tests showed that the density of 15000 per acre, after spraying CCC, the average number of bolls per plant 5, 44% of the buds off the bell, frost before flowering rate