棉田氮肥长期一致量施用对棉花农艺、经济性状的影响  

Effects of Long-term Application of Same Amount of Nitrogen Fertilizer on Cotton Agronomic and Economic Characters

作　　者：张允昔[1] 崔爱花[1] 夏绍南[1] 陈宜[1] 

机构地区：[1]江西省棉花研究所,江西九江332105

出　　处：《江西农业学报》2014年第4期50-52,共3页Acta Agriculturae Jiangxi

基　　金：国家公益性行业科研专项"棉花简化种植节本增效生产技术研究与应用"(3-5-14);国家棉花产业技术体系(CARS-18-36)

摘　　要：以杂交棉品种赣棉杂1号为材料，在赣北棉区进行了连续5年（2008～2012年）的不同施氮量（0～600kg／hm^2）定位试验，以探讨氮肥长期一致量施用对棉花农艺、经济性状的影响。结果表明：棉花株高、果枝层数和单株成铃数均有随氮素用量的减少而降低之势，且随着定位试验年数的延长其降低幅度加大；连续不施氮肥或少施氮肥有利于提高霜前花率，但会造成单铃重的下降。In order to explore the effects of long - term application of same amount of nitrogen fertilizer on the agronomic and e- conomic characters of cotton, hybrid cotton variety Ganmianza No. 1 was＇ used as experimental material, and the location tests for the application of various amount （0 -600 kg/hm2） of nitrogen fertilizer in cotton field were conducted in northern Jiangxi province from 2008 to 2012. The results showed that the plant height, fruit branch number and single -plant boll number of cotton reduced along with the decrease in the application rate of nitrogen fertilizer, and their reduction range increased with the increase in years of location test. Continuous no or little nitrogen fertilizer application was beneficial to the rising of pre - frost flower rate, but could cause the decline of single - boll weight.

关 键 词：棉花 氮肥 施用量 定位试验 性状 

分 类 号：S562.062[农业科学—作物学]