江淮丘陵地区玉米钾肥效应研究  

Preliminary Report on the Effect of the Potassium on Hybrid Maize in Jianghuai Region

作　　者：王允青[1] 刘英[1] 况晶[1] 郭熙盛[1] 

机构地区：[1]安徽省农科院土肥所,合肥230031

出　　处：《中国农学通报》2005年第5期269-271,287,共4页Chinese Agricultural Science Bulletin

基　　金：国际钾肥研究所(IPI)资助项目。

摘　　要：试验结果表明,杂交玉米每公顷施用K150.0kg时产量最高,达7065kg/hm2,比对照(NPKO)增产9.9%。钾肥经济效益也以每公顷施K150.0kg最高,比对照增收892元/hm2,产投比为2.2:1。钾肥施用量在K150.0kg/hm2以下时,土壤中的钾素亏损,不能保持土壤中钾素平衡。The results of the experiment indicated that Hybrid Maize could obtain the highest yields and the best economic performances as K application was 150.0 kg/hm2. The highest yield of Hybrid Maize reached 7065 kg/hm2 and increased by 9.9% than CK. The income was raised about 892 yuan/hm2 and the value cost ratio reached 2.2. The results also showed that potassium content in the soil decreased and cannot keep balance when the K was applicated under 150.0kg/hm2.

关 键 词：江淮丘陵地区 效应研究 钾肥 试验结果 杂交玉米 经济效益 钾素平衡 产投比 施用量 公顷 对照 土壤 

分 类 号：S562[农业科学—作物学] TQ441.41[化学工程—化学肥料工业]