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本文在田间试验基础上,采用回归分析及数学模拟的方法,研究了早熟棉花生物量增长及产量形成与气候生态因子的关系。结果表明,棉花干物质增长可用 Logistic 函数模拟,并建立了干物质增长的气候生态模型。影响各生育时期生长速度的关键因子是积温。分析了产量构成因素与气候生态条件的关系,明确了影响铃重、衣分的关键因子分别为日均气温和最低气温,建立了产量气候生态模型。分析了不同种植方式下播期与产量的关系,提出了地膜棉播种适期的温座指标。
Based on the field experiments, this paper studied the relationship between the biomass growth and yield formation and climatic ecological factors in precocious cotton using regression analysis and mathematical simulation. The results showed that the growth of cotton dry matter can be simulated by Logistic function and the climatic ecological model of dry matter growth has been established. The key factor that affects the growth rate of each growth period is accumulated temperature. The relationship between yield components and climatic and ecological conditions was analyzed. The key factors influencing the boll weight and lint percentage were defined as the average daily temperature and the minimum temperature respectively, and a production climate ecological model was established. The relationship between sowing date and yield under different planting modes was analyzed, and the warm seat index of mulching cotton planting suitable period was put forward.