Interaction between va mycorhiza to seabuckthorn and treated soil in different phosphoric fertilizers 菌根对沙棘改土效应的影响
2.
Effect of long - term returning straw to soil on soil fertility lao xiurong , wu ziyi , gao yanchun 长期秸秆还田改土培肥效应的研究
3.
Sediment in the lower yellow river irrigation is mainly treated with warping and improvement of saline - alkali soil , low and waste lands , which plays an important role in improving the ecological environment and developing the agricultural production in the areas by two banks of the lower yellow river 黄河下游引黄灌溉中的泥沙主要采取放淤改土、改造低洼盐碱沙荒地，对黄河下游两岸发展工农业生产、改善生态环境，起到了重要作用。
