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棉花茎叶的生长,既受其种性制约,也受环境条件和栽培措施的影响。关于棉花茎叶生长的基本规律,国内外已有不少报导,但是,不同追肥处理对棉花茎叶生长的效应则研究甚少。为了探索不同追肥处理对棉花茎叶生长的影响及其效应,我们进行了试验观察。材料与方法不同追肥处理试验于一九八○年、一九八一年在许昌河南农学院试验田进行。试验地面积0.81亩,壤土,前茬棉花、萝卜。于棉花播种后取土测定其氮、磷、钾含量(结果见表1)。
The growth of cotton stems and leaves, both by its species constraints, but also by the environmental conditions and cultivation measures. There are many reports about the basic rules of cotton stem and leaf growth at home and abroad. However, the effects of different top dressing treatments on stem and leaf growth of cotton are poorly studied. In order to explore the effect of different top dressing treatments on cotton stem and leaf growth and its effects, we conducted the experimental observation. MATERIALS AND METHODS Different dressing treatments were carried out in 1980 and 1981 in the pilot farm of Henan Agricultural College in Xuchang. Test area of 0.81 acres, loam, former crop of cotton, radish. After sowing cotton soil testing to determine its nitrogen, phosphorus and potassium content (results in Table 1).