随水滴施缩节安和多效唑对棉花幼苗生长发育的影响

A Study on the Effect of DPC and PP_(333) Dissolved in Water during Irrigation on the Growth of Cotton Seedling

在 11.5 9～ 92 .6 7g/hm2 用量内随水施用 97%缩节安 ,对棉花幼苗侧根的发生、根系活力、幼茎的伸长等没有明显的促进或抑制作用 ,对棉花幼苗的生长调控作用不明显。随水滴施多效唑对于调控棉苗生长发育具有明显的效果 ,其适宜施用纯量为 11.2 5～ 2 2 .5g/hm2 ,施用量超过 4 5 .0g/hm2 以上时 ,则明显影响了棉种的发芽率、出苗率和根系发育 。

The permitting amount of DPC is 11.59～92.67g/hm\+2,The effect PP\-\{333\} dissolved in water during irrigation on the growth of cotton seedling is insignificant.The safe of PP\-\{333\} use is very important, the cotton growth may be restrained when the amount of PP\-\{333\} were excessive.