relative yield 第1页

Assessment and effects of integrated soil fertility in red paddy soil under different longterm fertilization USE AND MANAGEMENT OF SOIL WATER AND NITROGEN RESOURCES Ⅱ-The simulation of use, loss and annual use efficiency of soil water and nitrogen resources Abundance and deficiency indices of phosphorus in South China vegetable field based on different soil testing methods Coexistence and inter\|specific competition in grass-legume mixture