增施商品有机肥对青稞产量和养分利用效率的影响  

Effects of a Commercial Organic Fertilizer on the Yield and Nutrient Utilization Efficiency of Hulless Barley

作　　者：杨勇 李晗 旦增 云丹佳措 陈革明 冯正明 荣湘民 YANG Yong;LI Han;DAN Zeng;YUN Dan-jiacuo;CHEN Ge-ming;FEN Zheng-ming;RONG Xiang-min(College of Resources and Environment,Hunan Agricultural University/Hunan Provincial Key Laboratory of Farmland Pollution Control and Agricultural Resources Use,Changsha 410128,China;Hunan Hualv Biotechnology Co.,Ltd.,Xiangtan 411200,China;Bailang Agriculture and Animal Husbandry Integrated Service Center,Rikaze 857000,China;Zhufeng Hualv Ecological Agriculture Technology Co.,Ltd.,in Tibet,Rikaze 857000,China)

机构地区：[1]湖南农业大学资源环境学院/农田污染控制与农业资源利用湖南省重点实验室,湖南长沙410128 [2]湖南华绿生物科技有限公司,湖南湘潭411200 [3]西藏自治区日喀则市白朗县农牧综合服务中心,西藏日喀则857000 [4]西藏珠峰华绿生态农业科技有限公司,西藏日喀则857000

出　　处：《大麦与谷类科学》2020年第3期35-40,共6页Barley and Cereal Sciences

基　　金：日喀则市科技科协计划项目(2018—2020)。

摘　　要：采用田间小区试验,研究商品有机肥对青稞产量和养分利用效率的影响。结果表明,随着商品有机肥施用量的增加,青稞籽粒产量呈先增加后减少的趋势。供试商品有机肥施肥量为2250 kg/hm^2时籽粒产量最高,达到5007.5 kg/hm^2,增产幅度为66.2%。氮磷钾肥利用率都随着商品有机肥施用量的增加呈先缓慢升高后快速降低的趋势,最高分别增加7.51、3.13、17.67百分点。由此说明增施商品有机肥可明显增加土壤速效养分含量和有机质含量,对土壤pH值影响不大。综合分析,青稞施用供试商品有机肥,推荐适宜施用量为1500~2250 kg/hm^2。A field trial was carried out to investigate the effects of the commercial organic fertilizer"Zhufeng 4000"on the yield and nutrient utilization efficiency of the hulless barley cultivar"Zangqing 2000".The trial involved seven treatments that consisted of two control treatments(CK,without any fertilizers;CF,applied only with the chemical fertilizer at 375 kg/hm^2)and five treatments with the organic fertilizer applied at the rates of 750(OF1),1500(OF2),2250(OF3),3000(OF4),and 3750(OF5)kg/hm^2,in addition to the chemical fertilizer applied at 375 kg/hm^2.The results showed that the grain yield of the tested cultivar rose first and then declined with increasing application rate of the organic fertilizer.The greatest increase in grain yield occurred in OF3,which attained the highest yield of 5007.5 kg/hm^2,higher than that of CF by 66.2%.Compared with CF,the N,P and K utilization efficiency of the hulless barley cultivar rose slowly at first and then decreased rapidly with increasing application rate of the organic fertilizer;among the five treatments with the organic fertilizer,OF2 showed the largest increase in N utilization efficiency by 7.51%,and OF3 had the largest rises in P and K utilization efficiency by 3.13%and 17.67%,respectively.Therefore,application of the commercial organic fertilizer significantly elevated the contents of available nutrients and organic matters in soil while having no significant impact on soil pH value.According to the above results,suitable application rates of"Zhufeng 4000"are in the range of 1500~2250 kg/hm^2 for hulless barley production.

关 键 词：青稞 商品有机肥 肥料利用率 产量 有机质 

分 类 号：S661.2[农业科学—果树学]