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DRIS在关中地区冬小麦施肥中的应用研究
引用本文:李旭辉,李瑛,刘军,张朝阳.DRIS在关中地区冬小麦施肥中的应用研究[J].植物营养与肥料学报,2005,11(2):174-178.
作者姓名:李旭辉  李瑛  刘军  张朝阳
作者单位:1.西北农林科技大学资环学院 陕西杨凌712100
摘    要:1993~1995年在关中地区的兴平、杨凌、扶风等地,采用大田调查、田间试验(其中包括长期定位试验)与室内化学分析相结合的方法,按照营养诊断与推荐施肥综合法即DRIS,对其低、高产群体小麦叶片氮、磷、钾养分分析数据进行不同表示式计算,选出小麦叶片养分含量比值作为诊断参数。结果表明,DRIS适合关中中西部冬小麦氮、磷、钾营养诊断;DRIS诊断能指明冬小麦植株对氮、磷、钾各营养元素的需要次序和程度;DRIS诊断结果不受冬小麦植龄、叶位的限制。

关 键 词:DRIS    冬小麦    施肥诊断
文章编号:1008-505X(2005)02-0174-05
修稿时间:2004年1月2日

Application DRIS on winter wheat fertilization in Guanzhong area
LI Xu-hui,LI Ying,LIU Jun,ZHANG Zhao-yang.Application DRIS on winter wheat fertilization in Guanzhong area[J].Plant Nutrition and Fertilizer Science,2005,11(2):174-178.
Authors:LI Xu-hui  LI Ying  LIU Jun  ZHANG Zhao-yang
Affiliation:1.College of Resour. and Envir. Science;Northwest Sci.-Techn. Univ. of Agric. and For.;Yang Ling;Shanxi 712100;China
Abstract:There are many plant nutrient diagnosis methods, such as comparative curve method, polygonal graphic method, and critical value method and so on. However, those diagnosis methods have certain limitation and can not (response) to the inner link among different kinds of nutrient elements and interrelation between external environmental (factors). Diagnosis and Recommendation Integrated System (DRIS) can overcome these shortcomings to some extent. Its main scientific basis is: collecting crop yield and leave ingredient data of a certain crop in a certain area for the determination of standard values for DRIS N,P,K. Analysis results of unknown sample were evaluated according to these standard values. The advantage of DRIS is that it can determinate crops nutritive elements demanding order, furthermore, (determination) is not confined by the plant-age and leaves-place of the crop. DRIS has been extensively applied in the (United) States, South Africa, Netherlands, Australia and Brazil. Combining field investigation and plot trials (including long-term located experiment) with laboratory chemistry analysis, the expression calculation of analysis data of N, P and K in wheat leaves of low yield group (yield <6000 kg/hm2)and high yield group(yield≥6000 kg/hm2) were done according to DRIS. Nutrient content ratio in wheat leaves were (selected) as diagnosis parameters. A sample unit was set up for the verification of the adaptability of DRIS and further (extension). The results showed that DRIS was suited to the nutrient diagnosis of N, P and K for winter wheat in western part of Guanzhong area while the ratio of N, P and K of high yield crop was selected as diagnosis parameters. The diagnosis of DRIS could point out the demanding order and level of nutrient elements. Furthermore, the diagnosis was not confined by plant-age and leaves-place.
Keywords:DRIS
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