摘要
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 data of field experiments by split—spot experimental design,relationships between biomass increase and yield formation of early cotton 'Jing 6' and ecoclimatic factors were studied by progressive regression and mathematical simulation.It was discovered that dry matter increase shows a curve pattern.The growing curve can be simulated by logistic equa- tion,The eco-climatic model of dry matter increase was developed.The key factors affecting growth rate of each growing period are accumulated temperature.Relationship between yield components and eco-climatic factors was analyzed.The key factors affecting per boll weight and lint percent are daily mean air temperature and minimum air temperature in the bolling pe- riod.The eco-climatic model of yield was developed.The standard temperature of suitable sowing time of mulching with plastic film was proposed.
出处
《棉花学报》
CSCD
北大核心
1991年第2期69-76,共8页
Cotton Science
关键词
棉花
生物量
产量形成
气候生态
Cotton
Biomass
Yield formation
Film-mulching
Climatic ecology
Mathematical model
