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通过研究提出北疆棉花公顷产2250kg皮棉的栽培生理模式,模式包括叶面积指数、光合势、净同化率、群体光合速率、群体呼吸速率、干物质积累与分配等各项生理指标。叶面积指数在开花、盛花、盛铃、盛絮期分别为1.30、2.80、3.90、1.80;总光合势231.35×104m2·d,其中盛铃期以后的光合势占总光合势的70.37%;平均净同化率为8.14g·m-2·d-1,盛铃后期至吐絮期为4.05~4.40g·m-2·d-1;群体光合速率的最高值出现在盛铃前期,值为4.05g·CO2·m-2·h-1,全生育期平均为2.65gCO2·m-2·h-1;群体呼吸速率的最高值出现在盛铃后期,值为2.69gCO2·m-2·h-1,平均为1.46gCO2·m-2·h-1;总干物质积累12657.7kg,经济系数47.9%。
The physiological and biochemical models of 2250 kg lint cotton yield in northern Xinjiang were proposed through the research. The patterns include leaf area index, photosynthetic potential, net assimilation rate, population photosynthetic rate, population respiration rate, dry matter accumulation and distribution. The leaf area index was 1.30, 2.80, 3.90, 1.80 respectively in flowering, full bloom, Shengling, and tillage, and the total photosynthetic potential was 231.35 × 104m2 · d. Photosynthesis after Shengling period Which accounted for 70.37% of the total photosynthetic potential, with an average net assimilation rate of 8.14g · m-2 · d-1 and a rate of 4.05 ~ 4.40g · m-2 · d-1 ; The highest value of population photosynthesis appeared in the early stage of Shengling, with a value of 4.05g · CO2 · m-2 · h-1 and an average of 2.65gCO2 · m-2 · h-1 in the whole growth period. The population respiration rate The highest value appeared at the later stage of Shengling, with a value of 2.69gCO2 · m-2 · h-1 and an average of 1.46gCO2 · m-2 · h-1. Total dry matter accumulation was 12,657.7kg and economic coefficient was 47.9% .