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我们在山东省陵县陵西盐改实验区。以荒地为中心设计了深浅排与农业措施相结合的试验区,探讨深浅排沟与农业措施相结合的改土效果。工作从1979年开始,已历时7
We are in Shandong Lingxian Lingxi experimental zone reform. With the wasteland as the center, a test area combining depth row and agricultural measure was designed to discuss the soil improvement effect by combining the depth drainage ditches with the agricultural measures. The work started in 1979 and lasted 7