基于甘肃省中低产田现状的改良措施及其应用效果

中低产田是指土壤存在一种或几种制约农业生产的障碍因素，农业单产相对低而不稳的耕地。研究和分析甘肃省中低产田的现状及其改良技术措施，有针对性地实施中低产田改良改造，对改善甘肃省的农业生产条件和生态环境，提高土地产出率和经济效益，具有重要而深远的意义。针对甘肃省中低产田面积大、分布广和相对集中的特征，在分析中低产田障碍因素成因和主要类型的基础上，梳理了近年甘肃省主要的中低产田改良集成技术措施及其应用效果，提出了中低产田改良和治理的对策建议。

Improvement Measures and the Applicati on Effects Based on the Current Situation of Middle-low Yield Farmlands in Gansu

Middle-low yield farmlands are defined as the arable lands which have one or several obstacles to agricultural production in the soil, and lead to relatively low and unstable agricultural output per unit area. Studies and anlysis on the current situation of middle-low yield farmlands and the improvement measures in Gansu are of great importance for the targeted implementation of the improvement of middle-low yield farmlands, the improvement of agricultural production conditions and ecological environment, and the improvement of arableland output rates and economic benefits in Gansu. Aimed at the charaters of large area, wide distribution and relatively concentration in middle-low yield farmlands of Gansu, this paper, based on the analysis of cause of formation and main types of middle-low yield farmlands, sorted out the technical measures and their application effects on the improvement of middle-low yield farmlands in Gansu and proposed countermeasures and management suggestions for the improvement of middle-low yield farmlands in Gansu as well.