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近年来,南疆棉区不断扩大零号分枝类型细绒棉的种植面积,且确定新海523为今后推广品种。该类型的棉株为圆筒形,株型紧凑,宜于密植。但适宜的密植程度及相应的打顶时期,尚待于研究确定。 本文根据一九六二、一九六三年的试验,就不同密度、不同打顶时期对棉株生育期、茎叶生长、干物质积累、成铃及蕾铃脱落,以及产量和纤维品质等影响,提出相应的合理密植幅度。
In recent years, cotton area in southern Xinjiang continue to expand the size of zero-branched cotton planting area, and to determine the new sea 523 to promote the future varieties. This type of cotton plant is cylindrical, plant type compact, suitable for close planting. However, the appropriate degree of close planting and the corresponding topping period, yet to be determined. According to the experiments of 1962 and 1963, the effects of different densities and topping periods on the growth of cotton plants, the growth of stems and leaves, the accumulation of dry matter, the detachment of bolls and bolls, the yield and fiber quality Influence, put forward the corresponding reasonable density.