農業(yè)生產中化肥的合理利用-展示頁
2025-07-07 12:52本頁面
【正文】 en39。因此，加快建立具有中國特色的農業(yè)生產科學施肥體系，提高肥料資源的利用率，是中國農業(yè)可持續(xù)發(fā)展的關鍵舉措之一，也是構建節(jié)約型社會的具體現。而中國人多地少的基本國情沒有變、長期養(yǎng)分投入低于產出，導致土壤養(yǎng)分耗竭的特點決定了必須不斷增加化肥的投入，豐富農業(yè)生產過程中物質和能量循環(huán)的內容，提高單位面積產量，提高耕地產出率，因此在今后相當長時期內，施肥仍將是農業(yè)持續(xù)發(fā)展的重要措施之一。摘要隨著世界和中國人口在逐漸增加，耕地由于非農業(yè)項目占用而逐漸下降，單位面積耕地的負載壓力越來越大，使農業(yè)生產面臨嚴峻挑戰(zhàn)。為了解決糧食安全問題，中國絕大部分耕地已經用于產量較高和需肥量較大的糧食作物。 目前中國的農業(yè)生產科學施肥水平整體還不高，部分地區(qū)仍然存在盲目施肥現象，肥料資源浪費嚴重，農業(yè)生產成本增加，效益降低，導致農產品品質下降，污染生態(tài)環(huán)境，加速土壤質量衰退，直接影響糧食持續(xù)增產、農業(yè)提質增效、農民節(jié)本增收和農產品質量安全。關鍵詞: 化肥 農業(yè)生產 合理應用AbstractWith the world and China population in increasing gradually, cultivated land occupied due to nonagricultural project and gradually declined, unit area of cultivated land under increasing pressure load to agricultural production is facing serious challenges. In order to solve grain safety issues, China39。t changed, the basic conditions of longterm nutrient input below, lead to soil nutrient depletion output determines the characteristics of chemical fertilizer inputs must be continuously increase agricultural production process, enrich the content of the material and energy circulation, improve the yield per unit of area, improve cultivated land output, so in future a quite long period of time, fertilization will still be agricultural sustainable development is one of the important measures. The present China39。s agricultural sustainable development is one of the key measures of constructing economical society concrete presentlyKeywords: Fertilizer Agricultural production Reasonable application目錄摘要……………………………………………………………………………………1前言……………………………………………………………………………………4化肥的定義………………………………………………………………………4常用化肥類別及種類……………………………………………………………4……………………………………………………………………………4……………………………………………………………………………4 ……………………………………………………………………………4 ………………………………………………………………………4………………………………………………………
試題試卷相關推薦
鄂ICP備17016276號-1