doujiao
，youmingjiangdou，shirenmensuoxiaideshucaipinzhong。dandoujiaoyituihua，tuihuadedoujiaopinzhongjiejiachi
，chanliangdi
，pinzhilie。duiyuchangguipinzhong，weilefangzhipinzhongtuihua，kecaiyongtichunfuzhuangdefangfa。

    1、設置隔離區。豆角屬自花授粉作物，自然雜交率在4%以下
，但有時因品種
、氣候等因素影響，雜交率也可達10%以上。所以應設置隔離區，生產原種隔離區應達80-100米
，生產用種隔離區應在20米以上。

    2、quzaqulie。zheshipinzhongbaochundezhongyaocuoshi
，congbozhongqianjingxuanyuanzhongkaishi，zaifanyuguochengzhongyinggenjupinzhongtedianjizhongsanciquzaqulie。diyicizaichuhuaqi，zhongdianshiqudiaobingzhu
、生(sheng)長(chang)不(bu)良(liang)株(zhu)和(he)畸(ji)形(xing)株(zhu)。第(di)二(er)次(ci)在(zai)第(di)一(yi)批(pi)嫩(nen)莢(jia)達(da)到(dao)采(cai)收(shou)標(biao)準(zhun)時(shi)，根(gen)據(ju)莢(jia)的(de)特(te)性(xing)去(qu)掉(diao)雜(za)株(zhu)。第(di)三(san)次(ci)在(zai)種(zhong)子(zi)采(cai)收(shou)前(qian)，根(gen)據(ju)成(cheng)熟(shu)莢(jia)及(ji)種(zhong)子(zi)特(te)征(zheng)去(qu)掉(diao)雜(za)株(zhu)。這(zhe)樣(yang)既(ji)能(neng)保(bao)證(zheng)收(shou)獲(huo)種(zhong)子(zi)的(de)純(chun)度(du)
，又(you)能(neng)保(bao)持(chi)其(qi)優(you)良(liang)品(pin)種(zhong)特(te)性(xing)。

    3、jiajiaoxuanze。doujiaoshengchangwangsheng，jingmanzaijiashangchanmianjiaoluan
，danzhuxuanzeshikunnande
，tongchangshicaiyongxuanjiajiaodefangfa。jizaifanyutianlixuanzeyouliangjiajiao，zuohaobiaoji，dadaocaishouchengdushihunheshouzhong，jizhongtuolibaocun。

    4

、tianjianjianding。diernianbozhonghoujinxingtianjianjianding
，rufuhepinzhongyaoqiu，quzaqulie，hunheliuzuoyuanzhongyong。rubufuheyaoqiu，yingjinyibuxuanze，zhizhifuhebiaozhun。lingwai
，haikeyixuanzeyouliangpinzhongdejiajiao，danshoudanda。dierniandandubozhong
，jingjiandingfuhepinzhongyaoqiushi，jikequzaquliehunhebingliuzuoyuanzhong。