STUDIES ON DYNAMICS OF POTASSIUM IN SOIL IN WHEAT MAIZE ROTATED CHAO SOIL REGION II. EFFECTS OF POTASH APPLICATION ON CROP YIELD AND DYNAMICS OF POTASSIUM IN SOIL
Applying the methods of field trial and indoor chemical analysis, this paper studied the dynamic changes of potassium in soil and the crop responses to potash application during a wheat-maize rotation in Chao soil of northern Henan province. The results s