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2250~2400kg·hm-2高产棉花一生中的干物质积累总趋势与一般高产棉相一致,但前期略快,花铃期较稳,后期下降缓慢;棉花各生育阶段的干物质分配是:出苗至开花,棉花积累的干物质主要分配给叶茎;开花后,干物质分配逐渐转向蕾铃为主,到吐絮期时,铃干重占单株总重量的55.5%,这要比一般高产棉花铃重占干物质总重的比值高,经济系数在0.36~0.43;棉花生长发育要求茎粗节短,生长稳健矮壮,打顶后的株高控制在70~78cm。
The trend of total dry matter accumulation in 2250 ~ 2400kg · hm-2 high-yielding cotton was consistent with that of high-yielding cotton in the whole period, but the earlier period was slightly faster, the boll period was stable and the later period was slowed down. The dry matter allocation of cotton in different growth stages was: When flowering, the dry matter accumulated in cotton was mainly distributed to the leaf stems. After flowering, the dry matter distribution gradually shifted to the buds. When the boll-opening period was reached, the dry weight of bell accounted for 55.5% of the total weight of the plants, The boll weight of high-yield cotton accounted for the highest proportion of total dry matter, with an economic coefficient of 0.36-0.43. The growth and development of cotton required shorter and thicker stalks, stable and vigorous growth, and the plant height was 70-78 cm after topping.