【摘要】：農(nóng)牧業(yè)的快速發(fā)展導(dǎo)致氮、磷等營養(yǎng)元素的投入和排放超出了耕地環(huán)境承載能力,造成嚴(yán)重的農(nóng)業(yè)面源污染問題,直接威脅農(nóng)業(yè)的可持續(xù)發(fā)展�；谵r(nóng)牧結(jié)合視角,采用過剩氮計(jì)算方法測(cè)算江蘇省各市的過剩氮排放現(xiàn)狀,并探尋過剩氮形成的原因,提出過剩氮治理的對(duì)策。治理過剩氮主要可從3個(gè)方面進(jìn)行,即降低化肥施用強(qiáng)度,提高化肥利用效率;合理安排農(nóng)牧業(yè)生產(chǎn),形成良性物質(zhì)循環(huán);降低耕地生產(chǎn)強(qiáng)度,完善農(nóng)作物輪作生產(chǎn)體系,適當(dāng)實(shí)施休耕。
[Abstract]:The rapid development of agriculture and animal husbandry leads to the input and discharge of nitrogen, phosphorus and other nutrient elements beyond the carrying capacity of cultivated land environment, resulting in serious agricultural non-point source pollution problem, which directly threatens the sustainable development of agriculture. Based on the view of combination of agriculture and animal husbandry, the present situation of excess nitrogen emissions in Jiangsu Province was calculated by using the method of calculation of excess nitrogen, and the causes of the formation of excess nitrogen were explored, and the countermeasures for the treatment of excess nitrogen were put forward. The control of excess nitrogen can be carried out from three aspects: reducing the application intensity of chemical fertilizer, improving the utilization efficiency of chemical fertilizer, rationally arranging the production of agriculture and animal husbandry, and forming a benign material cycle. Reduce cultivated land production intensity, improve crop rotation production system, appropriate implementation of fallow.
【作者單位】： 江蘇省農(nóng)業(yè)科學(xué)院農(nóng)業(yè)經(jīng)濟(jì)與信息研究所;
【基金】：江蘇省社會(huì)科學(xué)基金(編號(hào):15WTA008) 中國博士后科學(xué)基金(編號(hào):2015M581756)
【分類號(hào)】：X322;F323.211

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