Come nearly 20 years, in NP the scale of the urea in total wastage and ammonium phosphate increases significantly, compound fat scale is in simple substance phosphate fertilizer and NPK drop.

 
  • 近20年來(lái),在氮磷總消耗量中尿素和磷酸銨的比例顯著(zhù)增加,單質(zhì)磷肥和氮磷鉀復合肥比例在下降。
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