摘要
叶绿素仪因其方便、快捷、非破坏性的优点而被越来越多的运用在作物氮营养诊断上。通过分析叶绿素CCI值与氮营养指数NNI之间的相关性,可以把两者的优点结合起来,达到准确方便检验作物氮营养状况的目的。本研究以河套灌区典型作物玉米为研究对象,设置5个氮肥处理(0、135、180、225、280kg/hm^2),通过田间试验,研究了河套灌区玉米叶绿素CCI值和NNI在氮营养诊断上的可行性。结果表明,叶绿素仪的测定值与施氮量、产量和氮营养指数之间均有较好的相关性。本研究叶绿素测定值推荐玉米的适宜施氮量为225kg/hm^2。
Chlorophyll meters have been paid more and more attention in nitrogen diagnosis due to its convenience, speedily and non- destructiveness. Through analysis of the relationship between chlorophyll CCI value and nitrogen nutrition index, we can combine their advantages and achieve the purpose of examining crop nitrogen nutritionconveniently. This study with maize which grow in Hetao irrigation area as the research object, setting up five N-fertilizer treatment （0, 135, 180, 225, 280 kg/hm2）, and researched feasibility on nitrogen nutrition diagnosis of corn chlorophyll values of CCI and NNI in Hetao irrigation area through the field experi- ments. The results show that the determination of chlorophyll meter values and n application rate, yield and nitrogen nutrition index has good correlation. The chlorophyll measurements suggest that appropriate N application rate is 225 kg/hm2 in Hetao irrigation area.
出处
《节水灌溉》
北大核心
2016年第9期36-39,共4页
Water Saving Irrigation
基金
国家自然科学基金"盐渍化节水灌溉氮磷互作效应及土壤微生物特征反馈机理"(S1369019)
国家自然科学基金重点项目"变化环境下盐渍化灌区水肥循环机制及调控研究"(51539005)
内蒙古自治区"草原英才"人才项目
关键词
施氮处理
叶绿素CCI值
氮营养指数
氮诊断
nitrogen treatment
determiilation of chlorophyll meter values
N nutrition index
nitrogen diagnosis
