海南中部国家重点生态功能区农户粮食生产与生态要素的函数研究——以琼中县为例

摘要

We took Qiongzhong,a county in the key ecological function area as an example to start a modeling analysis with natural capital and farm households features as production factor in paddy rice growth.And we developed a growth function of paddy rice in Qiongzhong according to farm households' questionnaire data and interpretation results of remote sensing.The results showed that:Significant positive correlation was found between paddy rice yield and the natural vegetation and plantation areas within and around the village;under present fertilization conditions,there was a positive correlation between urea and paddy rice yield,however there was no significant correlation found between compound fertilizer and phosphatic fertilizer and paddy rice yield;the labor resources of farm households is an important factor which will influence the paddy rice yield,as there are more migrant workers from rural area,the paddy rice yield has decreased;the paddy rice yield of non-farm households is obviously lower than farm households and households with both functions.%以重点生态功能区内的琼中县为例,将自然资本和农户家庭特征作为生产要素纳入水稻的生长函数中,根据农户问卷调查数据,结合遥感信息解译结果,构建了琼中县水稻生产函数.结果表明:村庄内部及周边的天然植被、人工林面积均与水稻单产存在显著正相关;在琼中县目前的施肥情况下,尿素与水稻产量存在正相关,而复合肥和磷肥与水稻单产没有显著相关关系;农户劳动力是影响水稻单产的重要因素,随着外出务工人数的增加,水稻单产呈下降趋势;非农家庭的水稻产量显著低于纯农家庭和兼业家庭.