滴灌施肥条件下核桃树早衰叶片矿质元素含量分析  

Analysis of mineral element content in premature senescence walnut leaves under drip irrigation and fertilization condition

作　　者：洪明[1] 张丽[2] 赵经华[1] 马英杰[1] 郑冰[1] 张清林[1] 曾冬梅[3] 

机构地区：[1]新疆农业大学水利与土木工程学院,新疆乌鲁木齐830052 [2]新疆农业大学草业与环境科学学院,新疆乌鲁木齐830052 [3]新疆维吾尔自治区水利厅牧区水利规划总站,新疆乌鲁木齐830000

出　　处：《干旱地区农业研究》2011年第4期153-156,共4页Agricultural Research in the Arid Areas

基　　金：国家科技支撑计划项目(2007BAD38B02;2007BAD38B09);新疆自治区重大专项(200731136-5);新疆科技支疆项目(200991237);新疆水利水电工程重点学科基金资助项目(XJZDXK-2002-10-05)

摘　　要：通过对滴灌及地面畦灌核桃树叶片矿质元素含量对比分析表明:滴灌成龄核桃树早衰叶片除磷、钙、铁含量较地面灌正常叶高111.1%、9.6%、11.1%外,其他矿质元素均不同程度低于地面灌正常叶片的含量,其中微量元素含量表现尤为明显;核桃树叶片早衰主要是由于叶片中钾、镁、锰、锌缺少所致;滴灌及滴灌施肥对核桃树中微量元素的吸收有一定的影响,建议核桃树从地面灌改为滴灌后适当增加中微量元素的补给。Mineral element content of walnut leaves were comparatively analysised under the condition of drip irrigation and border irrigation.The result showed that except content of Phosphorous,Calcium and Ferrum in premature senescence walnut leaves under the drip irrigation condition were 111.1%,9.6% and 11.1% higher than that in normal walnut leaves under the flood irrigation condition,Content of others mineral elements were lower in varying degrees than that in normal walnut leaves under the flood irrigation condition,which were particularly so with content of secondary and microelements.Premature senescence of walnut leaves was caused by short of Potassium,Magnesium,Manganese,and Zincum mainly.Drip irrigation and fertilization method has an effect to walnut trees＇s absorption of secondary and microelements.Application amount of secondary and microelements of walnut tree should be increased while irrigation method changed from flood irrigation to drip irrigation.

关 键 词：滴灌 核桃树 早衰叶片 矿质元素 中微量元素 

分 类 号：S275.6[农业科学—农业水土工程] S664.1[农业科学—农业工程]