影响新台糖1号甘蔗茎重增长的关键气象因子

• 作 者: 谢贵水 蒋菊生 蔡明道 陈俊明
• 机 构: 中国热带农业科学院橡胶研究所农业部热带作物栽培生理学重点开放实验室,中国热带农业科学院橡胶研究所农业部热带作物栽培生理学重点开放实验室,中国热带农业科学院橡胶研究所农业部热带作物栽培生理学重点开放实验
• 出 处: 热带农业科学
• 发表日期: 2005年01期
• 关键词: 甘蔗 主要气象 茎重 气象因子 伸长期 降雨日 平均风速 日照时数 间接效应 成熟期

采用逐步回归和通径分析的方法,对新台糖1号甘蔗旬茎重增长与11个气象因子之间的关系进行研究。结果表明:分蘖期影响茎重增长的主要气象因子是最低气温和最高气温,其中最低气温对茎重增长的直接效应为正,最高气温的直接效应为负;伸长期的主要气象因子为日照时数、降雨日数和平均风速,均为正效应,次要因子蒸发量的直接效应为负;成熟期的主要气象因子为最低气温和平均风速,均为正效应。并据此提出,在伸长期增加灌溉是甘蔗增产的关键措施。

The relationship between the stem weight growth and 11 meteorological factors of Xintai Tang 1 was studied by means of stepwise regression and path analysis. The results showed that the main meteorological factors affecting stem weight growth at tillering stage were the minimum temperature and the maximum temperature, of which the direct effect of minimum temperature on stem weight growth was positive and the direct effect of maximum temperature was negative. The main meteorological factors of elongation stage were sunshine time The number of rainfall days and the average wind speed are positive and the direct effect of the evaporation of the secondary factor is negative. The main meteorological factors of the mature stage are the minimum temperature and the average wind speed, all of which are positive effects. Based on this, it is suggested that increasing irrigation during the elongation period is the key measure to increase sugar cane production.