摘要
为了对沙化的土壤进行修复,采用双膜覆盖技术进行水稻种植,并选择自2014年以来采用该技术种植的水稻土作为研究对象,对比了水稻土、草地与荒漠的氮素循环,研究了科尔沁奈曼旗沙地和稻田的氮、磷、钾、有机质含量。结果表明,水稻土中氮、磷、钾、有机质含量皆随着水稻种植年数的增加而增加。至2018年,与未修复的沙化土壤相比,采用双膜覆盖技术种植的水稻土中,总氮增加了230%,总磷增加了750%,总钾增加了100%,有机质增加了146%。总的来说,双膜覆盖技术的应用可以修复沙化土壤,逐步将土壤养分增加到正常土壤水平。沙漠化土壤得到恢复,并为日后植物的生长提供所需营养。
In order to restore the sandy soil,double-film mulching technique is applied to the cultivation of desert rice.The un-restored sandy soil and the paddy soil planted by this technique were selected from 2014 to 2018 as the research object by comparing nutrient bridging in paddy soil,grassland and desert.The variation in soil nitrogen(N),phosphorus(P),potassium(K)and organic matter(SOM)contents in sand and paddy soils of Horqin Naiman Qi were studied.Results showed that paddy soil N,P,K and SOM contents increased with the increase of this technology application years.Compared to un-restored sandy soil,the content of soil total N in the paddy soil planted by double-film mulching technique increased by 230%;total P content increased by 750%;total K content increased by 100%;SOM content increased by 146%.Overall,double-film mulching tech-nique can improve the sandy paddy soil,restore the sandy land and provide the essential nutrients to the next generation of desert rice.
出处
《土壤科学》
2019年第3期198-209,共12页
Hans Journal of Soil Science
