The average utilization percent of nitrogen, phosphate and potassium fertilizer of spring maize covered with film on dry land is 38.1, 21.2, 40.3 percent and it is increased by 12.5, 8.3, 5.5 percent, respectively than film -uncovered.是什么意思_The average utilization percent of nitrogen, phosphate and potassium fertilizer of spring maize covered with film on dry land is 38.1, 21.2, 40.3 percent and it is increased by 12.5, 8.3, 5.5 percent, respectively than film -uncovered.在线翻译_英语_读音_用法_例句