種zhong子zi是shi糧liang食shi安an全quan的de關guan鍵jian。習xi近jin平ping總zong書shu記ji一yi直zhi高gao度du重zhong視shi種zhong子zi問wen題ti，多duo次ci作zuo出chu重zhong要yao論lun述shu和he重zhong大da部bu署shu，強qiang調tiao要yao靠kao中zhong國guo種zhong子zi來lai保bao障zhang中zhong國guo糧liang食shi安an全quan。