所谓矮化,就是利用缩节安或矮壮素在棉花生育期间进行2—5次化调,使棉株紧凑、矮壮。目前新疆棉花生产普遍推行高密度和矮化栽培,北疆棉区一般亩收获株数12 000—16 000株,南疆棉区9 000—12 000株,株高均控制在60cm左右。1986年以来,我们进行多年试验和调查研究,发现棉株在矮化条件下发生了一系列变化并表现出一定规律,这些规律对制订相应栽培技术措施有参考价值。 The so-called dwarf, that is, the use of shrinking or chlorpheniramine during cotton growth during 2-5 times tune, so that cotton plants compact, short and strong. At present, the cotton production in Xinjiang is generally promoted with high density and dwarfing cultivation. The average number of harvested harvesters in the northern cotton area is 12 000-16 000, while that in southern Xinjiang is 9 000-12 000. The plant height is controlled at about 60 cm. Since 1986, we conducted many years of experiments and investigations. We found that cotton plants under dwarfing conditions have undergone a series of changes and have shown certain laws. These laws have reference value for the formulation of corresponding cultivation techniques and measures.