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化肥利用率

【摘要】:
中国化肥的利用率不高,当季氮肥利用率仅为35%。据联合国粮食及农业组织的资料显示,1980年至2002年中国的化肥用量增长了61%,而粮食产量只增加了31%。肥料利用率偏低一直是中国农业施肥中存在的问题。鲁如坤等的研究发现,中国农田磷肥的利用率仅为10%~25%。磷肥利用率偏低不仅造成严重的资源浪费,还会使大量的磷素积累在土壤中,从而导致农田及环境污染。因此,提高磷肥的利用率对农业的可持续发展和环

  ZHONGGUOHUAFEIDELIYONGLVBUGAO,DANGJIDANFEILIYONGLVJINWEI35%。JULIANHEGUOLIANGSHIJINONGYEZUZHIDEZILIAOXIANSHI,1980NIANZHI2002NIANZHONGGUODEHUAFEIYONGLIANGZENGZHANGLE61%,ERLIANGSHICHANLIANGZHIZENGJIALE31%。FEILIAOLIYONGLVPIANDIYIZHISHIZHONGGUONONGYESHIFEIZHONGCUNZAIDEWENTI。LURUKUNDENGDEYANJIUFAXIAN,ZHONGGUONONGTIANLINFEIDELIYONGLVJINWEI10%~25%。LINFEILIYONGLVPIANDIBUJINZAOCHENGYANZHONGDEZIYUANLANGFEI,HAIHUISHIDALIANGDELINSUJILEIZAITURANGZHONG,CONGERDAOZHINONGTIANJIHUANJINGWURAN。YINCI,TIGAOLINFEIDELIYONGLVDUINONGYEDEKECHIXUFAZHANHEHUANJINGBAOHUDENGJUNJUYOUZHONGYAOYIYI。HUAFEIZAINONGYESHENGCHANCHENGBEN(WUZIFEIYONGJIARUGONGFEIYONG)ZHONGZHAN25%YISHANG,ZHANQUANBUWUZIFEIYONG(ZHONGZI、FEILIAO、NONGYAO、JIXIEZUOYE、PAIGUANDENGFEIYONG)DE50%ZUOYOU,GUOJIA、DIFANGHENONGMINDOUWEICIFUCHULEHENDADEDAIJIA。NONGMINMEINIANWEIGOUMAIHUAFEIYAOZHIFU1400YIYUAN(ANGENGDIMIANJIJISUAN,MEINIANPINGJUNMEIGONGQINGZAIGOUMAIHUAFEIFANGMIANWEI1005YUAN)。GUOJIAHEDIFANGMEINIANWEIJINKOUHUAFEIZHIFU35YIMEIYUANWAIHUIQUANGUOWEIZENGJIAHUAFEISHENGCHANNENGLI,MEINIANTOURU160YIYUAN。MEINIANWEISHENGCHANHUAFEIXIAOHAONENGYUAN6545WANDUNBIAOMEI,ZHANQUANGUONENGYUANSHENGCHANZONGLIANGDE5%。SHIJIEHUAFEISHICHANGZONGTICHENGGONGXUJIBENPINGHENG,LVEYOUFUYUDEJUMIAN。DANGEDIQUDEFAZHANBUPINGHENG。DANFEIGUOSHENGDEDIQUSHIQIANSULIAN、DONGOUHEZHONGDONGDENGDIQU,QUEKOUDIQUSHIYAZHOUHEXIOU。LINFEISHENGCHANJIZHONGZAIZIYUANFENGFUDEBEIMEI、QIANSULIAN、ZHONGGUOHEFEIZHOU,QUEKOUDIQUSHIYAZHOU、XIOUHELAMEIDENGDIQU。JIAFEIJIZHONGZAIJIANADAHEQIANSULIANDENGSHAOSHUYOUZIYUANDEGUOJIA。YAZHOUSHISHIJIESHANGZUIDADEHUAFEIQUEKOUDIQU,QIZHONGDANFEIQUEKOU10%,LINFEIQUEKOU30%,JIAFEI90%。

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