九江县棉花主要分布于长江沿岸和一冲积洲上。五○年开始推广陆地棉,初期农家肥施用较多,以后随着连作和化学肥料的发展,绿肥越种越少,农家肥料越用越少,而转以氮素化肥为主。棉稞性状多茎高、节稀、铃少、铃小、早衰,棉产逐年低落难上。为了提高棉产,推行科学植棉,我县分别于江洲公社的农科所和柳洲大队,永安公社的农科所和幸福良种队四个点,在施用一定数量有机肥(棉仁饼)的基础上,进行了增施氮、磷、钾化肥对棉花增产效果的探索,以求因地制宜和经济有效的施肥措施。一、试验设计试验地前作均为棉花冬季休闲地,江洲 Jiujiang County cotton is mainly distributed along the Yangtze River and an impoundment. Fifty years began to promote Upland cotton, the initial application of farmyard manure, and later with the continuous cropping and the development of chemical fertilizers, green manure less and less, the less farmers use less fertilizer, and converted to nitrogen-based fertilizer. Cotton stems traits stem high, thin section, less bell, bell small, premature aging, cotton production difficult year after year. In order to improve cotton production and promote scientific cotton planting, our county respectively at the Agricultural Science Institute of Jiangzhou Commune and the Liuzhou Battalion, Agricultural Yong’an commune and the well-being of the elite team of four points, the application of a certain amount of organic fertilizer (cotton cake) , On the basis of the nitrogen, phosphorus and potassium fertilizers increased yield of cotton exploration in order to seek measures to local conditions and cost-effective fertilization. First, the pilot design experiments before the cotton are all winter leisure, Jiangzhou