不同氮肥施用对杨树栽培土壤改良效果分析
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摘要
以阜新市"中绥12号"杨树林分为研究对象,对1年生杨树进行鸡粪与尿素不同配比施肥试验,以分析施肥对根际土壤养分、土壤微生物数量等指标的影响。结果表明:"J30N70"的施肥处理(30%的氮由鸡粪提供,70%的氮由尿素提供)在提高土壤微生物活性方面与其他处理差异显著,对杨树生长的促进作用最大;"J30N70"处理,速效磷和速效钾含量均是最高,且显著高于另外3个处理。鸡粪与尿素以3∶7的氮素供给配比施肥为杨树栽培的最佳施肥比例,对根际土壤养分的保持与提高具有积极的促进作用。
Taking stand of Populus 'Zhongsui No. 12' in Fuxin City as research objects,the experiment with different proportion of chicken manure and urea was applied to one-year-old poplar to analyze the effects of fertilization on rhizosphere soil nutrient and soil microbial quantity. Result shows that the fertilization treatment of "J30 N70"(30% nitrogen was provided by chicken manure and 70% of nitrogen was provided by urea) was significantly different from other treatments in improving soil biological activity, and promoted the growth of poplar;"J30 N70 Treatment, available phosphorus and available potassium were the highest, and significantly higher than the other three treatments. The ratio of chicken manure and urea to 3∶7 is the optimal fertilization ratio for poplar cultivation, which has a positive effect on the maintenance and improvement of nutrients in rhizosphere soil.
Taking stand of Populus 'Zhongsui No. 12' in Fuxin City as research objects,the experiment with different proportion of chicken manure and urea was applied to one-year-old poplar to analyze the effects of fertilization on rhizosphere soil nutrient and soil microbial quantity. Result shows that the fertilization treatment of "J30 N70"(30% nitrogen was provided by chicken manure and 70% of nitrogen was provided by urea) was significantly different from other treatments in improving soil biological activity, and promoted the growth of poplar;"J30 N70 Treatment, available phosphorus and available potassium were the highest, and significantly higher than the other three treatments. The ratio of chicken manure and urea to 3∶7 is the optimal fertilization ratio for poplar cultivation, which has a positive effect on the maintenance and improvement of nutrients in rhizosphere soil.
引文
[1] 樊小林,廖宗文.控释肥料与平衡施肥和提高肥料利用率[J].植物营养与肥料学报,1998,4(3):219-223
[2] 程东娟,刘树庆,王殿武,等.长期定位培肥对土壤酶活性及土壤养分动态变化影响[J].河北农业大学学报,2003,26(3):33-36
[3] 冯伟,管涛,王晓宇,等.沼液与化肥配施对冬小麦根际土壤微生物数量和酶活性的影响[J].应用生态学报,2011,22(4):1007-1012
[4] 关松荫.土壤酶及其研究法[M].北京:农业出版社,1986
[2] 程东娟,刘树庆,王殿武,等.长期定位培肥对土壤酶活性及土壤养分动态变化影响[J].河北农业大学学报,2003,26(3):33-36
[3] 冯伟,管涛,王晓宇,等.沼液与化肥配施对冬小麦根际土壤微生物数量和酶活性的影响[J].应用生态学报,2011,22(4):1007-1012
[4] 关松荫.土壤酶及其研究法[M].北京:农业出版社,1986