江汉平原地区施氮量对麦后直播棉CN01产量及品质的影响  

Effects of Nitrogen Application on Yield and Quality of Directly Sown Cotton CN01 after Wheat in Jianghan Plain

作　　者：吴芸紫 张贤红 胡爱兵 郭志明 Wu Yunzi;Zhang Xianhong;Hu Aibing;Guo Zhiming(Jingzhou Academy of Agricultural Sciences.,Jingzhou,Hubei 434000,China)

机构地区：[1]荆州农业科学院,湖北荆州434000

出　　处：《棉花科学》2022年第2期34-37,共4页Cotton Sciences

基　　金：国家现代农业产业技术体系资金资助(CARS-15-45)。

摘　　要：探究不同施氮量对麦后棉产量和品质的影响,以CN01为供试材料,在湖北荆州开展了田间试验。结果表明,在施氮肥量90~270 kg/hm^(2)内,随氮肥用量增加株高呈增高的趋势;产量呈先增后减的趋势,纤维长度、整齐度指数、断裂比强度呈先增加后递减的趋势;施氮肥量90~270 kg/hm^(2)可获得稳定的产量和品质,以施氮量135 kg/hm^(2)的产量最高,但是施氮肥过多(超过225 kg/hm^(2))会出现旺长、贪青晚熟和田间荫蔽的现象。江汉平原地区麦后棉直播棉CN01的适宜施氮量为90~135 kg/hm^(2)。To explore the influence of different nitrogen application on the yield and quality of cotton after wheat, CN01 was used as the test material and a field experiment was carried out in Jingzhou, Hubei.The results showed that within the nitrogen application rate of 90~270 kg/hm^(2), the plant height increased with the increase of nitrogen fertilizer rate. The yield increased first and then decreased, the fiber length, uniformity index and fracture ratio strength of the upper half of cotton fiber increased first and then decreased first. Nitrogen application rate of 90~270 kg/hm^(2)can achieve stable yield and quality, and nitrogen application rate of 135 kg/hm^(2)is the highest, but excessive nitrogen application(over 225 kg/hm^(2)) will appear flourishing, greed and late ripening and field shade. The suitable nitrogen application rate for direct seed cotton CN01 in Jianghan Plain is 90~135 kg/hm^(2).

关 键 词：江汉平原地区 麦后直播棉 施氮量 产量性状 品质性状 

分 类 号：S562[农业科学—作物学]