摘要
为探讨氮肥减施对蒜套棉氮肥残留量、生育性状、产量和纤维品质及植棉效益方面的影响,以瑞杂818为试验材料,设置4个减施氮量处理(0 kg/hm^(2)、45 kg/hm^(2)、90 kg/hm^(2)和135 kg/hm^(2)),以常规施氮量180 kg/hm^(2)为对照,研究不同减氮量对蒜套棉产量品质及其经济效益的影响。结果表明:随着施氮量的增加,氮肥残留量增加,棉花生育期延长,籽棉产量和皮棉产量均呈现先升高后降低的趋势,纤维上半部平均长度和整齐度指数均随着施氮量的增加而降低,而断裂比强度和马克隆值随着施氮量的增加先增加后降低,经济效益与产量变化规律基本一致,均随着施氮量的增加呈先增加后降低的趋势,施氮量为90 kg/hm^(2)处理(比常规施氮量减50%)的产品效益最高,综合考虑棉花需氮情况及经济效益情况,施氮量90 kg/hm^(2)处理为鲁西南植棉区蒜套棉推荐氮肥追施量。
The aim of this study was to investigate the effects of reduced nitrogen application on nitrogen residue,growth traits,yield,fiber quality and cotton planting efficiency of garlic interplanting cotton.Ruiza 818 was used as experimental material and set up four nitrogen reduction patterns(0,45,90 and 135 kg/hm^(2)),and the conventional nitrogen application rate of 180 kg/hm^(2) were set as controls to study the effects of different nitrogen reduction on the yield,quality and economic benefits of garlic cotton.The results showed that with the increase of nitrogen application,the residual amount of nitrogen fertilizer increased,cotton growth period prolonged,seed cotton yield and lint yield showed a trend of first increase and then decrease.The average length and evenness index of the upper half of the fiber decreased with the increase of nitrogen application rate,while the breaking strength and micronaire value increased first and then decreased with the increase of nitrogen application rate,and the economic benefits and yield change were basically the same,and both increase first and then decrease with the increase of nitrogen application rate.The treatment with a nitrogen application rate of 90 kg·hm^(-2)(50%less than the conventional nitrogen application rate)had the highest product benefit.Considering the nitrogen requirements and economic benefits of cotton,the nitrogen application rate of 90 kg·hm^(-2) is the recommended amount of nitrogen fertilizer topdressing for garlic interplanting in cotton planting area of Southwest Shandong Province.
作者
樊海潮
赵中亭
周亭英
许向阳
张志恒
曹光
张桂花
Fan Haichao;Zhao Zhongting;Zhou Tingying;Xu Xiangyang;Zhang Zhiheng;Cao Guang;Zhang Guihua(Academy of Agricultural Sciences of Heze.,Heze,Shandong 274000,China;Economic Crop Station of Heze.,Heze,Shandong 274000,China;Economic Crop Station of Shan County.,Heze,Shandong 273000,China)
出处
《棉花科学》
2021年第4期46-50,57,共6页
Cotton Sciences
基金
山东省农业良种工程项目(2020LZGC002-02-04)
山东省现代农业产业体系棉花产业创新团队(SDAIT-07-011-15)
关键词
鲁西南
氮肥减施
蒜套棉
产量
品质
经济效益
Southwestern Shandong
Nitrogen fertilizer reduction applied
Garlic interplanting cotton
Yield
Quality
Economic benefit
