摘要
农田基础地力提升对于减施肥料和作物稳产高产有着重大现实意义。为了研究华北潮土区土壤基础地力情况,在河南省典型潮土区原阳县、周口市、夏邑县等不同肥力水平的土壤上,通过2年大田试验及统计分析方法,观测和分析小麦-玉米轮作体系下土壤基础地力变化。结果表明:2012年和2013年小麦季的基础地力贡献率分别为78.1%和76.7%,略高于玉米季的71.9%和74.4%;2012年和2013年两季作物的平均基础地力贡献率分别为74.5%和75.1%,低肥力和高肥力水平土壤的地力贡献率没有显著差异。因此,华北潮土区小麦玉米轮作下土壤基础地力贡献率在75%左右。
The improvement of basic soil productivity is important to reduce fertilizer application rates andincrease crop yield. In order to study the basic soil productivity conditions in fluvo-Aquic soil region, northChina, the basic soil productivity were studied on typical fluvo-aquic soils at three sites（Yuanyang county,Zhoukou city and Xiayi county） of different fertilities under wheat maize rotation system by two- year fieldexperiment and statistical analysis technique. The results showed that the contribution rates of basic soilproductivity were 78.1% and 76.7% in the wheat season in 2012 and 2013, respectively, which were a littlehigher than that of the maize season of 71.9% and 74.4%; the mean contribution rates of basic soil productivityof the two crops were 74.5% in 2012 and 75.1% in 2013, the contribution rates had no significant differencebetween low fertility soil and high fertility soil. To sum up, the contribution rate of basic soil productivity influvo-aquic soil region, north China under the wheat-maize rotation was about 75%.
出处
《中国农学通报》
2016年第20期97-100,共4页
Chinese Agricultural Science Bulletin
基金
国家基础研究发展计划(973)项目"农田地力形成与演变规律及其主控因素"(2011CB100501)
公益性行业(农业)科研专项经费项目"粮食主产区土壤肥力演变与培肥技术研究与示范"(201203030-5)
河南省科技攻关"典型潮土活性有机质增产技术研究与应用"(162102110010)
"十二五"农村领域国家科技计划项目:农田秸秆"种植业-畜牧业-种植业"循环高效利用技术研究(2012BAD14B08-04)
国家自然科学基金"茶园土壤N2O排放特征及其关键调控因子"(41201255)
关键词
潮土
基础地力
土壤肥力
小麦-玉米轮作
fluvo-aquic soil
basic soil productivity
soil fertility
wheat-maize rotation
