摘要
本文根据三年试验结果所建立的数学模型,结合4—9月份的不同降雨量条件,对旱地棉花增加种植密度以后各种促控措施(施(?)量、施磷量、打顶日期、化控日期)的合理定量进行了分析。结果认为:早地棉花的高产栽培方案应以种植密度和磷肥的合理定量为基本內容,氮肥、打顶和化控作为依据天气情况和苗情酌情实施的调节措施。最后,依据试验结果,对方案的可行性及优点进行了讨论。
With a mathematical model built up from a three year experiment result, combining different rainfall from April to September this paper analyzed the rational quantitative application of various measures (nitrogen and phosphorous fertilizer application, topping, chemical control in prune) after the populatio density of cotton was increased. The results showed the principal contents in the high—yield culture plan were the population density of cotton and the amount of phosphorous fertilizer applied) and nitrogen fertilizer applied, topping and chemical control in prune were regulating measures that could be used according to the situation of weather and cotton seedling. The feasibility and the advantage of measuresabove were also discussed.
关键词
棉花
旱地
数学模型
栽培
Cotton
Dryland
Mathematical model
Culture plan
