聯合國糧食與農業組織今天表示，目前人們在所關注的影響糧食作物生長和收成的許多種因素中常常會忽視一個重要的方麵――雜草也可以給糧食生產帶來嚴重危害。根據該組織的研究，全球因雜草導致的糧食生產損失每年高達950億美元。

聯合國糧農組織說，由於戰爭、洪澇、旱災、病蟲害和氣候變化等因素以及政府的政策存在漏洞，全世界的饑餓人口目前已經超過10yi。zaidaozhijiewentidezhongduoyuanyinzhizhong，youyigezhuyaoyuanyinzaihendachengdushangmeiyoudedaozugoudezhongshi，zhejiushizacao。zacaomeinianduiliangshishengchanzaochengdeweihai，yidangqianjiagezhesuan，xiangdangyusunshile3.8億噸小麥，約合今年全球產量的半數以上。而在950億美元的經濟損失中，貧困的發展中國家承受了大約700億美元。

gaizuzhibiaoshi
，ruguokaolvdaonongminzaitiandizhongxiaohaodeshijianyoubanshuyishangshiyongyuchucaodehua，zacaozaochengdeshijijingjisunshihaiyaogenggao。yinci
，yaotigaonongyeshengchanli，kongzhizacaoshengchangyinggaishishouxianxuyaokaolvdewentizhiyi。zaifeizhou，zhegewentidezhongyaoxingyouweituchu，youyushiyongrengonglaoli，feizhouxiaononghumeitiandouyaochucao，meigejiatingtongchangzhinengchuli1公頃至1.5公頃的土地，但如果雜草管理措施得當，他們便能夠耕種更多的土地
，生產出更多的糧食。

糧liang農nong組zu織zhi指zhi出chu，現xian代dai的de雜za草cao綜zong合he管guan理li措cuo施shi並bing不bu隻zhi限xian於yu噴pen灑sa殺sha蟲chong劑ji，利li用yong作zuo物wu輪lun種zhong就jiu非fei常chang有you效xiao。這zhe種zhong技ji術shu是shi在zai同tong一yi塊kuai土tu地di上shang
，有you順shun序xu的de在zai季ji節jie間jian或huo年nian份fen間jian輪lun換huan種zhong植zhi不bu同tong的de作zuo物wu或huo采cai用yong複fu種zhong組zu合he，由you於yu雜za草cao往wang往wang與yu某mou些xie特te定ding的de農nong作zuo物wu相xiang伴ban而er生sheng
，定ding期qi改gai變bian作zuo物wu種zhong類lei有you助zhu於yu減jian少shao雜za草cao的de生sheng長chang。另ling外wai
，使shi用yong經jing過guo認ren證zheng的de優you質zhi種zhong子zi也ye能neng夠gou控kong製zhi雜za草cao。一yi般ban情qing況kuang下xia，農nong民min使shi用yong的de許xu多duo種zhong子zi都dou受shou到dao了le雜za草cao籽zi的de汙wu染ran，如ru果guo使shi用yong優you質zhi種zhong子zi或huo者zhe學xue會hui篩shai選xuan種zhong子zi，農nong民min就jiu能neng夠gou避bi免mian將jiang雜za草cao播bo種zhong在zai土tu壤rang中zhong。

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，haikeyishiyongshengwukongzhishouduan。liru，tongguoyinrumouzhongyuanchanyuyamaxunliuyudekunchong，keyouxiaodikongzhishuihuluzhezhongfanzhinenglihenqiangdewuzhong。http://www.98fo.cn