Evaluation of the Annual Change in the Arable Land Quality Grade in Sanya and Improvement Measures for Major Obstacles
A sound system for investigating,evaluating,and releasing information on cultivated land quality levels is estab-lished through the cultivated land quality level evaluation.The current situation and changing trends of cultivated land quality are understood,and timely information on cultivated land quality levels is released.The main obstacles affecting cultivated land production are identified,and targeted measures and suggestions are proposed to strengthen the protection and improve-ment of cultivated land quality,further improving the cultivated land quality management level.The results of this evaluation indicate that the average level of cultivated land quality in the city is 5.23,and the cultivated land quality is divided into ten levels.High-level land(from the first-to third-level land)accounts for 23.52%of the city's cultivated land area,medium-level land(from the fourth-to sixth-level land)accounts for 49.12%,and low-level land(from seventh-to tenth-level land)accounts for 27.36%.At the same time,corresponding improvement measures are proposed for the three main obstacle factors:obstacle level,waterlogging potential,and salt alkali.
cultivated land qualitycultivated land areagradeimprovement measures
NETL
NSTL
万方数据
