本文關鍵詞： 稻谷 小麥 玉米 主產(chǎn)區(qū) 非主產(chǎn)區(qū) 糧食單產(chǎn)　出處：《華南農(nóng)業(yè)大學學報(社會科學版)》2017年03期 　論文類型：期刊論文

【摘要】：在分析1978—2015年我國稻谷、小麥和玉米單產(chǎn)時空演進趨勢的基礎上,檢驗了全國產(chǎn)區(qū)省份、主產(chǎn)區(qū)省份和非主產(chǎn)區(qū)省份三大主糧單產(chǎn)的收斂情況。研究表明:全國三大主糧單產(chǎn)均在波動變化中顯著提升,且主產(chǎn)區(qū)省份三大主糧單產(chǎn)基本都持續(xù)高于非主產(chǎn)區(qū)省份;全國產(chǎn)區(qū)省份和非主產(chǎn)區(qū)省份三大主糧單產(chǎn)均存在顯著的收斂趨勢,單產(chǎn)絕對差距持續(xù)縮小,初期單產(chǎn)較低省份的單產(chǎn)提升速度更快,離自身穩(wěn)態(tài)值越遠的省份單產(chǎn)的提升速度也越快;主產(chǎn)區(qū)省份三大主糧單產(chǎn)收斂趨勢則不具有普遍性,小麥單產(chǎn)絕對差距未明顯縮小,稻谷單產(chǎn)提升速度也無明顯差異;與主產(chǎn)區(qū)省份相比,非主產(chǎn)區(qū)省份三大主糧單產(chǎn)收斂趨勢更顯著。
[Abstract]:On the basis of analyzing the temporal and spatial evolution trend of grain, wheat and maize yield per unit yield in China from 1978 to 2015, the provinces in the national producing areas were tested. The convergence of the three main grain yields in the main producing areas and the non-major producing areas was studied. The results showed that the three main grain yields in the whole country increased significantly in the fluctuation change, and the yield per unit yield of the three main grain production areas in the main producing areas was basically higher than that in the non-main producing areas. There is a significant convergence trend among the three major grain yield in the provinces of national production areas and non-major production areas. The absolute gap of yield per unit yield continues to narrow, and the increase rate of unit yield in the initial provinces is faster than that in the provinces with lower yields. The more far away from the steady state value, the faster the promotion speed of the yield per unit, the convergence trend of the three main grain yields in the main producing areas is not universal, the absolute difference of wheat yield per unit yield is not significantly reduced, and the rate of raising rice yield per unit yield has no obvious difference. Compared with the provinces in the main producing areas, the convergence trend of the three main grain yields in the provinces of the non-main producing areas is more significant.
【作者單位】： 中國農(nóng)業(yè)科學院農(nóng)業(yè)經(jīng)濟與發(fā)展研究所;
【基金】：中央級公益性科研院所基本科研業(yè)務費專項(1610052016011) 國家自然科學基金面上項目(71473253) 中國農(nóng)業(yè)科學院科技創(chuàng)新工程(ASTIP-IAED-2016-06)
【分類號】：F326.11
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本文編號：1543672