本文選題：土地整治　切入點(diǎn)：土壤呼吸　出處：《應(yīng)用生態(tài)學(xué)報(bào)》2017年03期

【摘要】：采用定位試驗(yàn),研究了施用新鮮牛糞(15000和75000 kg·hm~(-2))和綠肥(36000kg·hm~(-2))對玉米產(chǎn)量、土壤呼吸和土壤化學(xué)、物理性狀的影響.結(jié)果表明:與單施化肥相比,土地整治區(qū)施用牛糞的玉米籽粒增產(chǎn)7.2%~29.9%,千粒重增加2.5%~18.2%,活性有機(jī)碳和有機(jī)質(zhì)含量分別增加5.3%~34.6%和8.0%~17.6%.施用綠肥的玉米籽粒增產(chǎn)10.8%~15.6%,千粒重增加4.5%~8.4%,活性有機(jī)碳含量增加14.1%~48.6%,在第二年土壤有機(jī)質(zhì)含量增加了7.2%.施用牛糞和綠肥的土壤呼吸速率增加了20.0%~69.3%.施用牛糞和綠肥增加了土壤容重,減少了總孔隙度和毛管孔隙度,分別增加了0.01 mm和0.05~1 mm粒徑團(tuán)聚體的比例.連續(xù)2年在土地整治區(qū)施用牛糞和綠肥不僅能夠增加玉米籽粒產(chǎn)量,而且已經(jīng)對土壤物理化學(xué)性質(zhì)的改善表現(xiàn)出積極的作用.
[Abstract]:The effects of fresh cattle manure (15000 and 75000 kg) and green manure (36000kg) on maize yield, soil respiration, soil chemistry and physical properties were studied by location-based experiment.The results showed that compared with applying chemical fertilizer alone, the grain yield of corn treated with cow dung increased by 7.2% and 29.9%, the weight of 1000 seeds increased by 2.5% and 18.2%, the contents of active organic carbon and organic matter increased by 5.3% and 17.6%, respectively.The yield of corn grain increased 10.8%, the 1000-grain weight increased 4.5%, the content of active organic carbon increased 14.1% and 48.6%, and the organic matter content of soil increased 7.2% in the second year.The soil respiration rate of cattle manure and green manure increased 20.0% 69.3%.The application of cow manure and green manure increased the bulk density of soil, decreased the total porosity and capillary porosity, and increased the ratio of 0. 01 mm and 0. 05 ~ 1 mm diameter aggregate, respectively.The application of cow dung and green manure in land reclamation area for two consecutive years could not only increase the grain yield of maize, but also play a positive role in improving the physical and chemical properties of soil.
【作者單位】： 湖北省農(nóng)業(yè)科學(xué)院植保土肥研究所;湖北省煙草公司恩施州公司;
【基金】：湖北省煙草公司科技專項(xiàng)(027Y2013-004) 湖北省農(nóng)業(yè)科技創(chuàng)新項(xiàng)目(2011-620-003-03-05)資助~~
【分類號(hào)】：S513;S153

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