【摘要】：高標(biāo)準(zhǔn)農(nóng)田建設(shè)是保障我國(guó)糧食安全的關(guān)鍵措施之一,剖析其建設(shè)過程中的限制因素對(duì)合理安排建設(shè)布局的影響就尤為重要�；趯�(duì)遼寧省耕地地力評(píng)價(jià)基礎(chǔ)數(shù)據(jù)的分析,本研究構(gòu)建了包括自然條件、立地條件、土壤管理、耕層理化性狀和耕層養(yǎng)分狀況等5類15項(xiàng)因素的遼寧省耕地分區(qū)利用指標(biāo)體系,并運(yùn)用K-means聚類分析法對(duì)遼寧省耕地進(jìn)行了分區(qū),共得到5個(gè)Ⅰ級(jí)區(qū),10個(gè)Ⅱ級(jí)區(qū)。此外,考慮到當(dāng)前區(qū)域經(jīng)濟(jì)發(fā)展水平和工程建設(shè)的可行性,本研究從中選出3類11項(xiàng)指標(biāo)作為高標(biāo)準(zhǔn)農(nóng)田建設(shè)分區(qū)的限制因素,采用層次分析法確定了各限制因素的權(quán)重,利用限制因素組合法和加權(quán)求和法確定了各限制因素高、中、低的限制等級(jí),并結(jié)合高標(biāo)準(zhǔn)農(nóng)田建設(shè)分區(qū)標(biāo)準(zhǔn)將各耕地利用分區(qū)中的高標(biāo)準(zhǔn)農(nóng)田劃分為重點(diǎn)、一般、勉強(qiáng)和不宜建設(shè)區(qū)。研究結(jié)果表明,遼寧省高標(biāo)準(zhǔn)農(nóng)田建設(shè)重點(diǎn)宜放在高限制因素較少的遼寧中部和沿海地區(qū),而建設(shè)難度較大的遼寧東部和西部地區(qū)可適當(dāng)控制高標(biāo)準(zhǔn)農(nóng)田建設(shè)的投入,注重生態(tài)屏障的保護(hù)。
[Abstract]:The construction of high standard farmland is one of the key measures to ensure the food security in China. It is particularly important to analyze the influence of the restrictive factors in the construction process on the rational arrangement of construction layout. Based on the analysis of the basic data of cultivated land fertility evaluation in Liaoning Province, this study has constructed the natural conditions, site conditions and soil management. Five and fifteen factors, such as physical and chemical characters of tilling layer and nutrient status of tilling layer, were used to divide cultivated land in Liaoning Province. Five 鈪，

本文編號(hào)：2196958