粮食主产区耕地质量影响因素与粮食产能关系分析

发布时间：2018-04-13 23:13

本文选题：耕地质量 + 粮食产能　；参考：《中国农业资源与区划》2017年09期

【摘要】：[目的]分析耕地质量构成要素对粮食产量影响,探讨提高粮食生产能力途径和方法。[方法]文章选取河南省粮食主产区内近10年来的土地资源调查、农用地分等、耕地地力评价、粮食产能核算等多项成果数据,以4.645 0万个行政村为评价单元,采用GIS空间分析法,建立了耕地质量单因素变化及因素指标组合与粮食产能关系曲线,测算了多模型影响下耕地质量因素改变量对粮食产能的影响大小。[结果](1)耕地质量影响因素各指标分级变化会引起粮食产能改变,总体上,当耕地所处的环境因素改善后,粮食产能将不断增加,因素指标分级对粮食增产能力的影响大小各不相同,11个因素的理论最大增产量和平均增产能力排序大致相当,但最大与最小间相差约8倍;(2)自然质量分充分体现了因素指标组合状态,四次多项式是表示耕地质量因素组合与粮食产能最佳关系模型,即随着自然质量总分提高,标准粮产量提升值呈现"倒S"型变化,即自然质量总分每变化0.01个单位,标准粮提升或降低78.15kg/hm~2。[结论]该文成果为粮食核心区内高标准农田建设提供数据支撑。
[Abstract]:[objective] to analyze the influence of cultivated land quality on grain yield and explore the ways and methods to improve grain production capacity.[methods] the paper selects land resources investigation, farmland grading, farmland land fertility evaluation, grain productivity accounting and so on in the main grain producing areas of Henan Province in the past 10 years, taking 4.645 million administrative villages as the evaluation unit.The single factor change of cultivated land quality and the relation curve between factor index combination and grain productivity were established by using GIS spatial analysis method, and the influence of cultivated land quality factor change on grain productivity was calculated under the influence of multiple models.[results] 1) the grain production capacity will be changed when the factors affecting the quality of cultivated land are graded. In general, when the environmental factors of the cultivated land are improved, the grain production capacity will continue to increase.The influence of factor index classification on grain yield is different, and the order of theoretical maximum yield increase and average yield increase ability of 11 factors is roughly the same.However, the difference between the maximum and the minimum is about 8 times / 2) the natural mass score fully reflects the state of the combination of factors and indexes, and the fourth order polynomial is the best model for the relationship between the combination of factors of cultivated land quality and grain productivity, that is, with the increase of the total natural quality score,The increase value of standard grain yield showed a "inverted S" pattern, I. e., the total natural quality score changed by 0.01 units, and the standard grain increased or decreased by 78.15 kg / hm ~ (-1) 路hm ~ (-1) 路kg ~ (-1) 路hm ~ (-1).[conclusion] the results of this paper provide data support for the construction of high standard farmland in grain core area.
【作者单位】：河南省科学院地理研究所;郑州测绘学校;
【基金】：河南省科学院基础科研项目(20170505)
【分类号】：F323.211;F326.11

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