棉株体内的有机养料,一般是从同化器官——叶片,通过韧皮部的输导组织,输送到生长活动部分,如分生组织、茎尖嫩叶、根尖、花、果等,供它们代谢活动和生长发育的需要。一部份有机养料也可以在叶、茎、根等器官内贮藏起来,然后再向生长活跃部份输送。为什么棉株体内有机养料总是朝着旺盛的器官输送呢?它的机理目前尚不清楚,但有许多材料表明,这与生长素等植物激素有关。通过对棉株器官间内源激素的分析,人们 Organic nourishment in cotton plants is generally transported from the assimilating organs - leaves through the phloem tissue of the phloem to the active part of growth such as meristems, shoot tips, apices, flowers, fruit, etc., for their metabolism Activities and growth needs. Some organic nutrients can also be stored in leaves, stems, roots and other organs, and then transported to the active part of the growth. Why is the body of organic cotton nourishment is always transported to the exuberant organs it? The mechanism is not yet clear, but there are many materials that are associated with plant hormones such as auxin. Through the analysis of endogenous hormones between cotton plants, people