重庆市永川区耕地地力评价结果及其利用对策

将重庆市永川区耕地地力划分为5个等级,归入全国耕地地力等级体系相应为四、五、五、六、七等,表明全区耕地土壤地力水平在全国耕地地力等级体系中属于中等偏下水平,明晰了全区耕地生产潜能,为完善种植业区域划分,优化资源配置,加速农业结构调整奠定基础。通过土样检测汇总分析,查明自1982年第二次土壤普查以来,永川区耕地土壤呈现酸化现象较重,有机质和碱解氮含量虽有所提高、但仍处于三级中等偏下的较低水平,有效磷和速效钾含量下降、且处于三至四级中等偏下水平,尤其是速效钾含量处于极度缺乏状态。

Preliminary Achievements and Utilization Countermeasures on Cultivated Land Capability Evaluation in Yongchuan District Chongqing

According to the present land capability evaluation,the land capability of the whole region can be divided to five grades, which correspond to Grade four,five,five,six,seven in the national cultivated land capability system.The result indicates that the land capability level of this region is below average in the national cultivated land capability systems.This research made clear the production potential of cultivated land in the whole region,laid a firm foundation for formulating planting partition,consum...