微咸水淋洗对玉米生长发育及产量的影响  

Effect of leaching with mildly saline water on corn growth character and yield

作　　者：吴乐知[1,2] 

机构地区：[1]湖北师范学院地理科学系,湖北黄石435002 [2]中国科学院东北地理与农业生态研究所,吉林长春130012

出　　处：《干旱地区农业研究》2009年第4期42-45,共4页Agricultural Research in the Arid Areas

基　　金：湖北师范学院人才引进项目(2008F19);湖北师范学院优秀中青年科技创新团队资助计划项目;国家十五科技攻关课题(2004BA508B05)

摘　　要：通过微咸水淋洗改良苏打盐渍土旱田的试验,探讨了微咸水淋洗对玉米生长发育和产量的影响。结果表明,与对照处理相比,补充灌溉和淋洗处理均促进了玉米植株生长和根系发育,且淋洗处理的效应更为明显;300、150 mm淋洗和补充灌溉处理分别较对照区增产68.69%,62.25%和8.41%,淋洗处理较补充灌溉处理达到了极显著增产,300 mm较150 mm淋洗处理虽有显著增产效果,但未达极显著水平。表明就本试验区玉米的正常生长发育而言,150 mm淋洗定额已基本满足,可作为改良应用的参考定额。An experiment of leaching slightly saline-sodic soil with mildly saline water was conducted for analysis of change in corn growth character, such as plant height, leaf area index and root, etc. There were four treatments： CK; supplementary irrigation; low-rate leaching; and high-rate leaching. Results indicate that the average plant height in Treatment 3 increased by 13 % compared to that in CK. Leaf area index in both Treatment 4 and 3 increased significantly compared to that in CK. Corn yield in Treatment 4, 3 and 2 increased respectively by 68.69%, 62.25% and 8.41 % compared to that in CK. It is obvious that corn growth character and yield in leaching treatments was improved significandy, and water condition was an important effect. It is hence concluded that suitable preferential volume of leaching in slightly saline-sodic soil in western Jilin Province is 150 mm, providing sufficient condition for local corn growing healthily.

关 键 词：微咸水 淋洗 苏打盐渍土 玉米 

分 类 号：S156.4[农业科学—土壤学]