No-tillage system participatory quality index

ABSTRACT The no-tillage system participatory quality index aims to evaluate the quality and efficiency of soil management under no-tillage systems and consists of a weighted sum of eight indicators: intensity of crop rotation, diversity of crop rotation, persistence of crop residues in the soil surface, frequency of soil tillage, use of agricultural terraces, evaluation of soil conservation, balance of soil fertilization and time of adoption of the no-tillage system. The aim of this study was to assess the extent to which these indicators correlate with the no-tillage system participatory quality index and to characterize the farmers who participated in the research. The data used were provided by ITAIPU Binacional for the indicators of the no-tillage system participatory quality index II. Descriptive analyses were performed, and the Pearson correlation coefficient between the index and each indicator was calculated. To assess the relationship between the indicators and the farmers’ behavior toward the indicators, principal component analysis and cluster analysis were performed. Although all correlations are significant at p-value ≤ 0.05, some correlations are weak, indicating a need for improvement of the index. The principal component analysis identified three principal components, which explained 66% of the variability of the data, and the cluster analysis separated the 121 farmers into five groups. It was verified that the no-tillage system participatory quality index II has some limitations and should therefore be reevaluated to increase its efficiency as an indicator of the quality of the no-tillage system.

摘要 免耕系统参与式质量指数（no-tillage system participatory quality index）旨在评估免耕体系下土壤管理的质量与效率，由8项指标加权求和得到：轮作强度、轮作多样性、土壤表层作物残体留存持久性、土壤耕作频率、农业梯田利用情况、土壤保育效果评估、土壤施肥平衡度以及免耕系统采用时长。本研究旨在探究上述指标与该指数的相关程度，并刻画参与本研究的农户特征。本研究使用的数据由伊泰普两国联营公司（ITAIPU Binacional）提供，对应免耕系统参与式质量指数Ⅱ的相关指标。本研究开展了描述性分析，并计算了该指数与各项指标间的皮尔逊相关系数。为探究各项指标与农户相关行为间的关联，本研究采用了主成分分析与聚类分析方法。尽管所有相关性均在p值≤0.05的水平下显著，但部分相关性较弱，表明该指数仍有改进空间。主成分分析识别出3个主成分，可解释66%的数据变异；聚类分析将121名农户划分为5个组别。研究证实，免耕系统参与式质量指数Ⅱ存在一定局限性，因此需对其重新评估，以提升其作为免耕系统质量评价指标的效能。

搜集汇总

背景与挑战

背景概述

该数据集名为'No-tillage system participatory quality index'，发布于2019年12月25日，旨在评估免耕系统中土壤管理的质量和效率。数据集包含八个加权指标，用于分析免耕系统的质量，并通过主成分分析和聚类分析对121名农民进行了分组研究。数据集的关键词包括农民、保护性农业、作物轮作、土壤和水保护以及可持续农业。