干旱区生态环境知识资源中心(Arid): 秸秆颗粒改良剂对川西北高寒沙地土壤氮素和黑麦草生长的影响

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	秸秆颗粒改良剂对川西北高寒沙地土壤氮素和黑麦草生长的影响
其他题名	Effect of Granulated Straw Amendment on Soil Nitrogen and the Growth of Ryegrass in the Alpine Sandy Land of Northwest Sichuan
	刘晓林 1; 陈伟 1; 吴雅薇 1; 王兴龙 1; 李强 2; 李鑫 1; 袁继超 1; 孔凡磊 1
来源期刊	水土保持学报
ISSN	1009-2242
出版年	2018
卷号	32 期号:6 页码:229-235
中文摘要	为探明秸秆颗粒改良剂对川西北高寒沙地土壤氮素和黑麦草生长的影响,以农业废弃物(秸秆)为主要原料,复合聚丙烯酰胺、微生物菌剂和氮磷钾肥,加工成秸秆颗粒改良剂,设4个施用量水平(6,12,18,24t/hm~2),以空白对照(CK0)和当地常规牦牛粪处理(CK1)为对照。结果表明:与CK0相比,秸秆颗粒改良剂和CK1均能显著增加土壤全氮、全氮密度、全氮储量和硝态氮含量,增加黑麦草株高、总根长、总根表面积、总根体积、平均根系直径和单株干重(p<0.05),达到增加土壤氮素含量和促进黑麦草生长的效果。与CK1相比,秸秆颗粒改良剂处理的平均全氮含量、全氮密度、全氮储量和硝态氮含量分别增加了12.50%,22.73%,20.90%和344.56%,黑麦草地上和地下部平均单株干重分别增加了57.50%和66.86%。增施秸秆颗粒改良剂可有效增加土壤氮素含量,黑麦草各生长指标也随改良剂施用量增加呈逐渐增加的趋势。施用量超过18t/hm~2时,0-10cm土层的全氮、全氮密度、全氮储量和黑麦草各生长指标差异不显著。土壤氮素指标与黑麦草单株干重存在正相关关系,其中土壤全氮、全氮储量与黑麦草单株干重的相关性最高(r≥0.90**)。随改良剂施用量增加,外源养分淋溶率呈先降低后升高的趋势,在18 t/hm~2处有最小值。综合考虑土壤氮素含量、外源养分淋溶率和黑麦草生长的变化,秸秆颗粒改良剂以18 t/hm~2为川西北沙地土壤改良的最佳施用量。
英文摘要	Soil desertification is one of the most serious environmental problems in the world.Soil fertilization and vegetation restoration are the key links in desertification governance.As a agricultural waste,crop straw still retains rich organic matter and nitrogen,phosphorus and potassium nutrients,and is a natural organic amendment.Granulation of straw can significantly improve straw returning and improve soil fertility.Using agricultural waste(straw)as the main raw material,adding polyacrylamide,microbial agents and NPK fertilizers,and processing them into granulated straw amendment(GSA).In order to investigate the effects of GSA on soil fertilization and vegetation growth in the alpine sandy land of Northwest Sichuan,a field experiment with blank control(CK0),local conventional yak dung treatment(CK1)and four application levels of GSA(6,12,18,and 24t/hm~2)were conducted.The results showed that compared with CK0,both GSA and CK1 significantly increased soil total nitrogen,total nitrogen density,total nitrogen storage and nitrate nitrogen content.GSA and CK1 also increased the plant height,total root length,total root surface,average root diameter,root volume and dry weight of single plant(DWSP)of ryegrass(p<0.05).The application of GSA and CK1 increased the soil nitrogen content and promoted the growth of ryegrass.The effect of GSA on the nitrogen content of sandy soil and the growth of ryegrass was better than that of CK1.Compared with CK1,the average of total nitrogen content,total nitrogen density,total nitrogen storage and nitrate nitrogen content increased respectively by 12.50%,22.73%,20.90% and 344.56% under the treatment of GSA.The average of shoot and root DWSP of ryegrass also increased respectively by 57.50% and 66.86%,when compared to CK1.Increasing the application rate of GSA can effectively increase soil nitrogen contentand the growth indexes of ryegrass also increases gradually.When the application rate exceeds 18t/hm~2,the total nitrogen content,total nitrogen density and total nitrogen storage in the 0-10 cm layer,and the growth indexes of ryegrass are not significantly different.There was a significant correlation between soil nitrogen and DWSP of ryegrass,and the correlation between soil total nitrogen and total nitrogen and DWSP of ryegrass was the highest(r≥0.90**).The leaching rate of exogenous nutrients decreased at first and then increased with increasing the application rate of GSA,with a minimum at 18t/hm~2.Considering the changes of soil nitrogen content,exogenous nutrient leaching rate and growth of ryegrass,the optimum application rate of GSA in sandy soil of northwest Sichuan is 18t/hm~2.
中文关键词	秸秆改良剂 ; 川西北 ; 高寒沙地 ; 土壤氮素 ; 黑麦草
英文关键词	straw amendment northwest Sichuan alpine sandy land soil nitrogen ryegrass
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6408588
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238326
作者单位	1.四川农业大学农学院, 农业部西南作物生理生态与耕作重点实验室, 成都, 四川 611130, 中国; 2.重庆文理学院特色植物研究院, 重庆经济植物生物技术重点实验室;;重庆市特种植物协调创新中心, 重庆 402160, 中国
推荐引用方式 GB/T 7714	刘晓林,陈伟,吴雅薇,等. 秸秆颗粒改良剂对川西北高寒沙地土壤氮素和黑麦草生长的影响[J],2018,32(6):229-235.
APA	刘晓林.,陈伟.,吴雅薇.,王兴龙.,李强.,...&孔凡磊.(2018).秸秆颗粒改良剂对川西北高寒沙地土壤氮素和黑麦草生长的影响.水土保持学报,32(6),229-235.
MLA	刘晓林,et al."秸秆颗粒改良剂对川西北高寒沙地土壤氮素和黑麦草生长的影响".水土保持学报 32.6(2018):229-235.