丘陵沟壑干旱山地上谷子对氮-磷-钾的吸收规律  

Study on Absorption Law of Nitrogen-Phosphorus-Potassium by Millet in Hilly and Gully Drought Mountain Areas

作　　者：韩芳 马朝阳 王斌[3] 王博 赵满兴[5] 贾润成 HAN Fang;MA Zhaoyang;WANG Bin;WANG Bo;ZHAO Manxing;JIA Runcheng(Yan＇an Agricultural Science Institute,Yan＇an 716000,China;Yan＇an Rural Energy Construction Office,Yan＇an 716000,China;Yan＇an Vocational and Technical College,Yan＇an 716000,China;Shaanxi Fruit Industry Group Yan＇an Co.,Ltd.,Yan＇an 716000,China;College of Life Sciences,Yan＇an University,Yan＇an 716000,China)

机构地区：[1]延安市农业科学研究所,陕西延安716000 [2]延安市农村能源建设办公室,陕西延安716000 [3]延安职业技术学院,陕西延安716000 [4]陕西果业集团延安有限公司,陕西延安716000 [5]延安大学生命科学院,陕西延安716000

出　　处：《山西农业科学》2018年第9期1502-1505,共4页Journal of Shanxi Agricultural Sciences

基　　金：国家谷子高粱产业技术体系(CARS-06-13.5);延安市科技攻关计划项目(2016KN-10)

摘　　要：在谷子不同生育阶段,测定植株样品的干物质和各样品的氮(N)、磷(P2O5)、钾(K2O)含量,对不同生育阶段谷子对氮磷钾吸收速率及吸收量进行测定和对比,以研究谷子在丘陵沟壑干旱山地上对氮-磷-钾的吸收规律。结果表明,谷子对N-P-K三要素通常表现为前期吸收速率慢,吸肥量少,中期吸收速率快,吸肥量也逐渐达到高峰,但P素的吸收高峰比N和K要晚些,N-P-K三要素在生长后期吸收速率又逐渐减慢;N,P2O5,K2O的吸收比例一般为1∶0.29∶0.55,吸肥量以氮最多,钾次之,磷最少。To study the absorption law of nitrogen-phosphorus-potassium（N-P-K）by millet in hilly and gully arid mountain larea,the dry matter of several samples and their respective nitrogen（N）, phosphorus（P2 O5）, potassium（K2 O）were determined, and the absorption rate and absorption of nitrogen, phosphorus, and potassium in millet at different growth stages were determined and compared. The results show that the three elements of N-P-K in millet are usually characterized by slow absorption rate in the early stage, low absorption of fertilizer, fast absorption rate in the medium term, and gradually peak absorption of fertilizer, but the peak absorption of P is later than N and K. The absorption rate of the N-P-K three elements gradually slows down after growth. The absorption ratio of N, P2 O5, K2 O is generally 1∶0.29∶0.55, and the amount of fertilizer absorbed is the most in nitrogen, the second is potassium, and the least is phosphorus.

关 键 词：丘陵沟壑干旱山地 谷子 氮-磷-钾 吸收规律 

分 类 号：S515[农业科学—作物学]