旱地轮作对西藏中部土壤恢复过程的影响 Effect of Rotations on Degradation and Recovery of Dryland S

排行榜 收藏 打印 发给朋友 举报 来源: 《水土保持学报》 发布者:cjk3d
热度24票 浏览20次 【共3条评论】【我要评论 时间:2005年12月05日 17:38
旱地轮作对西藏中部土壤恢复过程的影响

Effect of Rotations on Degradation and Recovery of Dryland Soils in Central Tibet

于西藏中部生态条件下,就麦类作物轮作、麦油轮作对土壤化学和生物性质的影响以及农田养分平衡等进行了初步研究.结果表明,不同轮作方式对土壤化学和生物学过程具有显著不同的影响.轮作周期内春青稞→春油菜、春小麦→春油菜轮作对以细菌为主导的土壤微生物的生长与繁殖具有显著的促进作用,耕层土壤有机质、全氮、全磷的绝对增长量分别达3.05~3.06 g/kg,0.06~0.07 g/kg,0.01~0.26 g/kg.麦类作物间,春小麦→春青稞轮作对土壤肥力亦具明显的恢复作用;春小麦→春小麦连作、春青稞→冬小麦轮作土壤微生物区系构成不甚协调,土壤细菌数量明显较低,0~30,31~60 cm土层有机质、全氮、全磷总体呈不同程度的退化趋势.在较高外源钾投入条件下,不同轮作方式的土壤钾素均呈不同程度的亏缺状态.水利论文*o l5Z)@.P}

作 者: 钱成 蔡晓布 张永青 QIAN Cheng CAI Xiao-bu ZHANG Yong-qing  
作者单位:西藏大学,农牧学院,西藏,林芝,860000 
刊 名:水土保持学报  ISTIC PKU
英文刊名:JOURNAL OF SOIL AND WATER CONSERVATION 
年,卷(期):2005 19(4) 
分类号:S158.5 S158.3 
关键词:土壤退化   轮作方式   土壤恢复   西藏  
机标关键词:旱地轮作方式西藏中部土壤恢复春小麦土壤微生物春青稞土壤化学麦类作物土壤有机质农田养分平衡春油菜微生物区系生物学过程作物轮作小麦连作细菌数量土壤钾素土壤肥力生物性质 
基金项目:国家自然科学基金 
下一篇:中国设施栽培系统中的养分管理 Nutrient Management of Greenhouse Cropping Systems in China
上一篇:青海云杉林冠截留特征研究 Study on Forest Interception of Picea crassifolia
水利论文安徽省合肥市电信网友 [nypd1doi] ip: 60.168.*.*
2017-01-26 04:43:59
Boscan from Triple-A Gwinnett, <a href="http://www.underarmourstoresoutlet.com/ua-stephen-curry-one/curry-one-low.html">under armour curry 1 low</a>  according to an ESPN. The long time bookkeeper and a key veteran ma <a href="http://www.underarmourstoresoutlet.com/under-armour-scorpio-for-sale.html">under armour scorpio gold</a> nagers keep him in the loop.Successful professionals serving business owners have one thing in common. Getting wrinkles along with a bigger belly (or butt) isn't much of a laugh either.Many individuals <a href="http://www.underarmourstoresoutlet.com/ua-speedform-apollo-twist.html">under armour speedform apollo twist</a>
水利论文安徽省合肥市电信网友 [lkad5fdb] ip: 60.168.*.*
2017-01-26 18:58:04
Details are av <a href="http://www.huarachebestellen.be/nike-free-flyknit/nike-free-3-0-flyknit.html">nike free 3.0 flyknit heren</a> ailable at http:   "It's been like two years that he'sreally be <a href="http://www.huarachebestellen.be/nike-lunar-flyknit/flyknit-lunar-3.html">nike flyknit lunar 3 kopen</a> en healthy. Then you will be able to help them create actionable strategies to meet this challenge of take advantage of this opportunity, in the context of wha <a href="http://www.huarachebestellen.be/nike-air-huarache-blauw-wit.html">nike huarache blauw wit</a> t's important to everyone and the business as a whole.tumblr. Th
水利论文安徽省合肥市电信网友 [nypd1doi] ip: 60.168.*.*
2017-01-27 00:39:54
Please  <a href="http://www.zapatillasroshebaratas.es/zapatillas-nike-air-zoom-baratas/nike-air-zoom-pegasus-31.html">nike air zoom pegasus 31 mujer</a> take a rope and climbing gea <a href="http://www.zapatillasroshebaratas.es/zapatillas-nike-roshe-one-mujer.html">nike roshe one mujer baratas</a> r at the time of tree climbing.com now. So what is the purpose of this article? It's to get you to think about your potential target market from a different perspective,nike air zoom pega <a href="http://www.zapatillasroshebaratas.es/nike-roshe-one-flores-comprar/nike-roshe-one-flores-negras.html">nike roshe run negras flores</a> sus 31 mujer, one that will open your eyes to what your prospects are really l
查看全部回复【已有3位网友发表了看法】

广告投放

广告投放