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1 开发背景如东是全国优质棉基地县之一,植棉历史悠久,常年棉花种植面积稳定在36.6kha。1979年全面推广塑膜温床育苗移栽技术以后,皮棉单产有了较大提高,由1978年的825kg/ha 上升到1983年的937 kg/ha。从1984年开始,我县又对棉花传统的施肥习惯
1 Development Background Rudong is one of the high quality cotton base counties in the country. It has a long history of cotton planting and its annual area of cotton planting has stabilized at 36.6 kha. After comprehensively promoting plastic film seedling transplant and transplanting techniques in 1979, the lint yield increased greatly from 825kg / ha in 1978 to 937kg / ha in 1983. Since 1984, my county has the traditional cotton fertilization habits