国产高清草在线观看视频,国产精成人品在线观看,成人午夜精品免费视频,亚洲色无码专区在线播放,精品内射1区2区,国产91再线在线观看,变态捡到女婴h养成调教,草莓视频看国产免费下载,国产无套露面在线观看,a在线观看欧美在线观看

1.It can induce differentiation of plant root tissue, stimulate hair roots and increase the number of roots.
2.Promote cell elongation, regulate the growth of organs and tissues.
3.Improve the absorption and operation of nutrient elements, regulate vegetative growth and reproductive growth.
4.Promote cutting rooting, transplanting rooting, fruit setting, fruit enlargement.