为分析非农就业对农户种植多样性的影响,通过农户问卷调查手段获得356份农户问卷,以在江苏省泰兴市和宿豫区的农户问卷调查数据为基础,采用Poisson回归方法,估计了农户种植多样性决策模型。依据模型估计结果,分析了非农就业对农户种植多样性的影响。分析表明,农户的种植多样性受到多种因素的影响。负责农业生产家庭成员受教育年限提高1 a,种植多样性提高1.5%左右;种植面积增加1 hm2,则农户种植多样性提高28%左右;就农户参与非农活动的影响而言,与负责农业生产家庭成员不参与非农活动的农户相比较,负责农业生产家庭成员参与非农活动家庭的种植多样性减少11%左右;负责农业生产家庭成员参与非农活动月数增加1个月,农户种植多样性大约降低1.4%。分析说明负责农业生产家庭成员参与非农就业会显著降低农户种植多样性。
Abstract
The purpose of this study aims to investigate the influence of non-farm work of farm household on the diversity of crop choices at farm household level. A farm household survey was carried out to collect information about off-farm employment and crop choice, and 365 farm households from Taixing City and Suyu District of Jiangsu Province were interviewed. This study differs from the previous research for this investigation was carried out at farmer level, and the farmer is not the household head but the family member in charge of agricultural production. Furthermore, the crop diversity was valued by crop kinds instead of diversity index. Poisson regression model was used to estimate the effect of non-agricultural work of farm household on crop diversity. The result shows that several factors influence farm household's decision of crop diversity. First of all, the crop types grown by farm household increase significantly with the increase of the year of education of farmers managing agricultural production, and the expected number of crop types increases by about 1.5% with an increase of the education year of farmers managing agricultural production, holding all other variables constant. The types of crops grown by farm households also increase significantly with the increase of crop acreage, and the expected number of crop types increases approximately 28% with an increase of 1 hm2 of crop acreage, holding all other variables constant. As far as off-farm employment is concerned, if other factors being equal, the expected number of crop types for a farm household whose family member managing agricultural production engaged in off-farm work is about 11% lower than for a farm household whose family member managing agricultural production didn't engage in off-farm work. Furthermore, the expected number of crop types decreases approximately by 1.4% with an increase of 1 month of non-farm work for the farmer managing agricultural production. In conclusion, engagement in off-farm work for the farmer in charge of agricultural production did significantly decrease farm household's crop diversity.
关键词
土地经济学 /
非农就业 /
Poisson回归 /
种植多样性 /
农户层次
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Key words
land economics /
off-farm employment /
Poisson regression model /
crop diversity /
farm household
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中图分类号：
F301
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脚注
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基金
国家自然科学基金资助项目(40801063,40971104);国家社会科学基金重大项目(10ZD&030);国土资源部公益性行业科研专项经费项目(200811033);中央高校基本科研业务费专项资金资助(1117020903);江苏高校优势学科建设工程资助项目。
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