安徽农业科学2016，Vol.44Issue(19)：128-129,136,3.
平衡施肥对高粱产量·效益及养分收支平衡的影响
Effect of Balanced Fertilization on Yield, Economic Benefits of Sorghum and Nutrient Balance
摘要
Abstract
Objective] To explore the optimal fertilization scheme for sorghum in central Shanxi Province.[Methods] Randomized block design was adopted and different fertilization levels were arranged .[ Results] Balanced fertilization exerted significant positive effect on yield and benefit of sorghum.In comparison, farmers’ conventional fertilization treatment suffered yield drop for 6.3% and income reduction of 376.05 yuan/hm2 .Nitrogen fertilizer was the major restricting factor influencing yield of local sorghum , followed by phosphorus and potash fertilizer . Balanced fertilization is favorable for uniform absorption of nutrients .Compared with conventional fertilization treatment , the recommended treat-ment of N, P and K fertilizer increased about 17.52, 3.68, and 32.46 kg/hm2 .225.00 kg/hm2 nitrogen fertilizer basically could meet demands of high yield of local sorghum, 75.00 kg/hm2 phosphorus fertilizer input was higher than the demand, while the potash fertilizer application was not sufficient.The utilization efficiency of N, P, and K fertilizer was 25.0%, 16.4% and 55.8%respectively.[Conclusions] It is required to increase the application of K fertilizer on the basis of recommended application , reduce P fertilizer, and promote optimization of fertilization and reach the objective of high yield and benefit.关键词
平衡施肥/养分平衡/高粱/产量Key words
Balanced fertilization/Nutrient balance/Sorghum/Yield分类
农业科技引用本文复制引用
刘静,曹雄,李婷,黄敏佳,梁晓红,张瑞栋..平衡施肥对高粱产量·效益及养分收支平衡的影响[J].安徽农业科学,2016,44(19):128-129,136,3.基金项目
国家现代农业产业技术体系高粱产业技术体系汾阳试验站资金资助项目（ CARS－06－04－06）；国家科技支撑计划课题（2014BAD07B02）。 （）
