棉花生育阶段与温度、水分及日照的关系

• 作 者: 冯利平 刘德章 韩学信
• 机 构: 山西农业大学农学系,山西农业大学农学系,山西农业大学农学系 太谷,太谷,太谷
• 出 处: 华北农学报
• 发表日期: 1990年01期
• 关键词: 棉花生育 生育阶段 生态因子 花铃期 数学模型 出苗时间 叶期 田间试验 地膜棉 地膜覆盖

本文在裂区设计田间试验资料基础上,采用逐步回归分析方法,研究了大田自然条件下影响棉花生育的关键气候生态因子及其作用方式.结果表明,温度是影响棉花生育进程的首要生态因子,日照时数和水分因子的影响次之.在三叶期以前主要受土壤温度因子的影响,三叶期以后则主要受日均气温的影响;在花铃期日照时数为主导因子.且极端温度也是影响棉花生育进程的重要因子.建立了主要生育阶段的数学模型,出苗期为:D_1=1/0.1755-0.0122X_1-0.0035X_2或D_1=62.34/X_1-12.49出苗后各生育阶段为:D_i=b_i+sum from j=1(b_1X_1),

Based on the field experimental data of fractured area design, a stepwise regression analysis method was used to study the key climatic ecological factors and their mode of action that affect natural conditions of cotton fields in the field. The results showed that temperature was the primary ecological factor affecting the process of cotton growth, The sunshine hours and the moisture factor were the second, and the soil temperature was the main factor before the three-leaf stage and the average daily temperature after the three-leaf stage, while the sunshine duration was the dominant factor during the flowering period. Temperature is also an important factor affecting the process of cotton growth. The mathematical model of the main growth stages was established. The seedling emergence period was: D_1 = 1 / 0.1755-0.0122X_1-0.0035X_2 or D_1 = 62.34 / X_1-12.49. The growth stages after emergence were: D_i = b_i + sum from j = 1 (b_1X_1),