耐盐牧草生物修复盐渍化耕地效果研究  

Effects of Salt-tolerant Forage on Bioremediating Saline-alkali Farmland

作　　者：胡伟[1] 单娜娜[1] 钟新才[1] 

机构地区：[1]新疆农业科学院土壤肥料研究所,新疆乌鲁木齐830091

出　　处：《安徽农学通报》2008年第7期148-149,151,共3页Anhui Agricultural Science Bulletin

基　　金：新疆农业科学院青年科技创新基金

摘　　要：比较三种耐盐牧草生物修复盐渍化耕地效果得出:各处理较对照在0-90 cm土层范围内土壤含盐量降低了12.30%-19.86%。牧草植株不同品种、不同生育期内对K+、Na+的选择吸收能力存在差异,主要表现在:沙打旺苗期植株K+、Na+含量最高但收获期降至最低;碱茅草和小黑麦收获期的K+含量保持在较高水平,且Na+含量比苗期均有增加;苗期和收获期SK/Na值均以小黑麦最高,沙打旺居中,碱茅草最低;通过收获植株地上部秸秆Na+移出量分别为:小黑麦:38.03kg/hm2,沙打旺:13.68 kg/hm2,碱茅草:13.24 kg/hm2,种植小黑麦修复盐渍化耕地效果最佳。Comparative experiment of there kinds of forage remediating Salt alkali Farmland was carried out. The results showed that salt content can be reduced from 12.30% to 19. 86% of the 0-90cm soil layers,The capacity of choice absorb-ing for K^＋, Na^＋ exists differences during growing period and species of the forage： In seedling period two ion express highest but lowest at harvest for A. pall ; Yet P. spp. and Tricale be concluded- K^＋ content remaining higher level while Na^＋ was increasing than before. The SK/Na value of tricale is higher than A. pall. and aslo P. spp. Na^＋ can be take away from farmland through havest Straw stalk as this： Tricale：38.03Kg/hm^2 ; A. pall： 13.68 Kg/hm^2 ; P. spp： 13.24 Kg/hm^2. Growing Tricale is the best choice to remediate saline-alkali Farmland.

关 键 词：耐盐牧草 生物修复 盐渍化 含盐量 

分 类 号：S143.3[农业科学—肥料学]