闽北中低产田土壤主要障碍因素分析

Analysis of Main Obstacle Factors of Middle-low Yield Soil in Northern Fujian

南平市是福建省的粮食主产区,耕地面积为22.05万hm2,其中水田21.33万hm2。以单位面积产量水平划分,有71.74%为中低产田。这些中低产田是制约粮食生产进一步发展的关键所在,也是提高单位面积产量和增加粮食总产的潜力所在。笔者通过分析不同类型中低产田的主要土壤障碍因素和肥力特性,总结经过实践可行的工程措施及农业生物技术措施,旨在为2015—2018年抛荒山垄田复垦改造及今后中低产田治理提供科学依据。

Nanping City is a major grain producing area in Fujian Province. There are 220500 hm2 arable landin this area, and the paddy soil accounts for 213300 hm2. Being divided according to yield level of per unitarea, 71.74% arable land belongs to the middle- low yield soil. The middle- low yield soil is the key toconstrain further development of grain production, and also the potential to increase grain yield. The authoranalyzed the main obstacle factors and fertility characteristics of different types of middle-low yield soil, andsummarized feasible project measures and agricultural and biotechnological technologies that had been provedthrough practices. The goal of this paper was to provide a scientific basis for the land reclamation of barrenmountains and the improvement of middle-low yield soil from 2015 to 2018.