黄淮海平原盐碱土改良技术——以山东省鲁西北平原开发试区为例  

Technologies of saline alkali soil amelioration in Huanghe-Huaihe-Haihe Plain -A case study on Pingyuan Experimental Plot in Northwest Shandong

作　　者：董振国[1] 鲁全国[1] 

机构地区：[1]中国科学院地理研究所,北京100101

出　　处：《生态农业研究》1999年第2期46-49,共4页Chinese Journal of Eco-agriculture

基　　金："八五"~"九五"中国科学院重大应用项目

摘　　要：山东省鲁西北平原开发试验区重盐碱荒地实施引谈水淋盐降低耕层土壤全盐量、增施有机肥减轻盐害、农田覆盖减少蒸发、种衣剂和“开大沟、留大背、浇大水,沟内集中施用有机肥、NP肥”植棉法等10项农业综合技术,使耕层土壤全盐量明显下降,土壤容重减小,土壤孔隙度增大,田间持水量增加,土壤保水保肥能力提高,林木覆盖率由开发前的4.5％提高到21.0％,粮食单产由治理前的6345kg/hm^2增加到1.253万kg/hm^2,粮食总产量由785万kg增加到1816万kg,人均收入由628元增加到1425元,经济、社会和生态效益显著。Implementing integated agricultural technologies such as fresh water leaching salt to reduce salinity in plough layer,increasing organic manure to lighten salt harmness,covering farmland to reduce evaporation and so on at Pingyuan Experimental Plot in northwestern saline alkali waste land of Shandong. Reducing salinity in plough layer soil,enhancing porosity of soil, increasing moisture capacity and conservation of both moisture and soil are achieved. In 1995,the forest tree covered rate reached 21. 0%,grain output reached 12. 53 thousand kg/hm2,total grain output reached 18160 thousand kg,average income reached 1425 yuan(RMB),4. 6,1. 9,2. 3,2. 27 times much than those of 1988,respectively.

关 键 词：盐碱土改良 土壤改良 盐量 

分 类 号：S156.4[农业科学—土壤学]