本文選題：綠肥 + 肥力��； 參考：《農(nóng)業(yè)工程學(xué)報(bào)》2017年23期

【摘要】：研究旨在探討稻草留高茬套種綠肥、稻草-綠肥聯(lián)合還田下的生產(chǎn)及土壤肥力特征,為南方稻區(qū)綜合利用稻草和綠肥提供理論及技術(shù)支撐。2012—2016年設(shè)置定位試驗(yàn),研究高茬稻草-綠肥聯(lián)合還田下的綠肥和水稻產(chǎn)量、土壤碳氮庫活性及其他養(yǎng)分特征。試驗(yàn)包括5個(gè)處理:冬閑+稻草不還田(CK),冬閑+稻草全量還田(RS),冬種紫云英+稻草不還田(MV),冬種紫云英+稻草低茬全量還田(MV+LRS),冬種紫云英+稻草高茬全量還田(MV+HRS),各處理施用等量化肥。結(jié)果表明:稻草-綠肥聯(lián)合還田提高綠肥產(chǎn)草量及其含氮量,與MV相比,分別增加了13.1%和6.8%(MV+LRS)、32.2%和5.2%(MV+HRS);增加水稻產(chǎn)量,以MV+HRS處理最高,4 a平均產(chǎn)量較RS、MV增加556.8和412.8 kg/hm2。2013和2015年,MV+HRS處理水稻產(chǎn)量高于MV+LRS。稻草-綠肥聯(lián)合還田培肥地力效果明顯,土壤有機(jī)質(zhì)、全氮含量均比CK、RS和MV增加;且聯(lián)合還田下有效養(yǎng)分提升更為全面。與稻草和綠肥單獨(dú)應(yīng)用相比,稻草-綠肥聯(lián)合還田還能提升土壤微生物量氮及可溶性有機(jī)碳氮含量。可見,稻草-綠肥聯(lián)合還田能夠改善綠肥生長、提高水稻產(chǎn)量、提升土壤肥力;其中,高茬稻草與綠肥聯(lián)合還田下的紫云英和水稻產(chǎn)量最高,土壤肥力也優(yōu)于低茬處理,是綜合利用稻草和綠肥資源的較好方式。
[Abstract]:The purpose of this study was to explore the production and soil fertility characteristics of rice straw with high stubble intercropping, straw and green manure returning to the field, and to provide theoretical and technical support for comprehensive utilization of rice straw and green manure in southern rice region. The green manure and rice yield, soil carbon and nitrogen pool activity and other nutrient characteristics were studied under the combination of straw and green manure with high stubble. The experiment includes five treatments: winter straw is not returned to field, winter rice straw is not returned to field MVN, winter plant rice straw is returned to field with low stubble, MV LRSN is returned to field, winter planting of Zyunya rice straw is returned to field with high stubble, total amount of rice straw is returned to field. The same amount of chemical fertilizer was applied to each treatment. The results showed that the combination of straw and green manure could increase the yield and nitrogen content of green manure, increase the yield of rice by 13. 1% and 32. 2% of 6.8%(MV and 5.2%(MV, and increase the yield of rice, compared with MV, the yield of rice was increased by 13. 1% and 32. 2%, respectively, and the yield of rice was increased. The average yield of rice treated with MV HRS for 4 years was 556.8 and 412.8 kg/hm2.2013 higher than that of RSV MV and the yield of rice treated with MV-MV HRS in 2015 was higher than that of MV-LRS. The effects of straw and green manure on soil fertility were obvious, soil organic matter and total nitrogen content were higher than CK, RS and MV, and the effective nutrients under the combined return were more comprehensive. Compared with straw and green manure application alone, straw and green manure can also increase soil microbial biomass nitrogen and soluble organic carbon nitrogen content. It can be seen that the combination of straw and green manure can improve the growth of green manure, increase the yield of rice and improve the soil fertility, among which, the yield of Ziyunying and rice under the combination of high stubble straw and green manure is the highest, and the soil fertility is better than that of low stubble treatment. It is a better way to make comprehensive use of straw and green manure resources.
【作者單位】： 中國農(nóng)業(yè)科學(xué)院農(nóng)業(yè)資源與農(nóng)業(yè)區(qū)劃研究所/農(nóng)業(yè)部植物營養(yǎng)與肥料重點(diǎn)實(shí)驗(yàn)室;中國農(nóng)業(yè)科學(xué)院研究生院;江西省農(nóng)業(yè)科學(xué)院土壤肥料與資源環(huán)境研究所/農(nóng)業(yè)部長江中下游作物生理生態(tài)與耕作重點(diǎn)實(shí)驗(yàn)室/國家紅壤改良工程技術(shù)研究中心;青海大學(xué)青海省農(nóng)林科學(xué)院土壤肥料研究所;
【基金】：國家綠肥產(chǎn)業(yè)技術(shù)體系(CARS-22) 中國農(nóng)業(yè)科學(xué)院科技創(chuàng)新工程 現(xiàn)代農(nóng)業(yè)人才支撐計(jì)劃 Newton Fund(Grant Ref:BB/N013484/1) 國家農(nóng)作物種質(zhì)資源平臺(tái)(NICGR2017-019) 作物種質(zhì)資源保護(hù)和利用項(xiàng)目(2017NWB038)
【分類號(hào)】：S158
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本文編號(hào)：1896958