国产又色又爽又黄好看的视频_99精品国产福利一区二区_久久中文无码_精品国产一区二区三区久久狼

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.