In the absence of chemical nitrogen fertilizer, the effective use of phosphate and potash fertilizers is largely limited to leguminous crops only (forage crops, green manure crops or pulses).是什么意思_In the absence of chemical nitrogen fertilizer, the effective use of phosphate and potash fertilizers is largely limited to leguminous crops only (forage crops, green manure crops or pulses).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句