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利用杂交棉制种亲本开花进程的Logistic方程,参照制种地区的工资物价水平和气候条件,确定了江苏省准北地区杂交棉制种的临界日的开花量指标为7441.8朵·hm-2·d-1,制种适期为7月12日到8月20日。在制种适期内制种可以节省用工27.5%,制种效率提高23.4%。
Using the Logistic equation of hybrid cotton seed flowering process, with reference to the wage price level and climatic conditions in the seed production area, the flowering index of the critical hybrid cotton seed production in the quasi-North Jiangsu Province was determined to be 7441.8 flower plants · hm- 2 · d-1, seed production suitable for July 12 to August 20. Seed production in the appropriate period of seed production can save 27.5% of labor, seed production efficiency increased by 23.4%.