山(shan)藥豆金龜甲(jia)５～８月發(fa)生(sheng)，一年發(fa)生(sheng)１代。成(cheng)蟲群集在葉片(pian)上危(wei)害，使葉片(pian)成(cheng)網狀。幼蟲在土中(zhong)危(wei)害植株根部。

山藥藍翅負泥蟲(chong)(chong)一(yi)年(nian)發生１代，以(yi)成(cheng)蟲(chong)(chong)越冬(dong)。山藥蔓伸出時，越冬(dong)成(cheng)蟲(chong)(chong)遷入(ru)群集危害(hai)，幼(you)(you)(you)小植株受害(hai)最重(zhong)。幼(you)(you)(you)蟲(chong)(chong)行動緩慢，有將排出的糞便(bian)覆(fu)蓋(gai)在體上的特性。老熟幼(you)(you)(you)蟲(chong)(chong)在葉背結白色繭(jian)化蛹(yong)。危害(hai)山藥后(hou)(hou)，造成(cheng)嫩葉和新芽有不規則孔洞，蔓頂端停止生長(chang)(chang)，葉片被害(hai)嚴重(zhong)的影(ying)響(xiang)生長(chang)(chang)。新一(yi)代成(cheng)蟲(chong)(chong)于７月前后(hou)(hou)出現，少量取(qu)食后(hou)(hou)遷移到越冬(dong)場所。

對這兩種害(hai)蟲(chong)，可于山藥苗期，在成(cheng)蟲(chong)活動盛期噴藥防(fang)治成(cheng)蟲(chong)，幼蟲(chong)一般用(yong)藥劑(ji)(ji)灌根法防(fang)治。可用(yong)４０％樂(le)斯本乳(ru)(ru)(ru)油(you)(you)(you)５００倍(bei)(bei)(bei)(bei)(bei)液潑澆，選用(yong)５０％辛(xin)硫磷乳(ru)(ru)(ru)油(you)(you)(you)１０００倍(bei)(bei)(bei)(bei)(bei)液、３％辛(xin)硫磷顆粒劑(ji)(ji)（每畝４～５公(gong)斤(jin)）、８０％敵(di)敵(di)畏(wei)乳(ru)(ru)(ru)油(you)(you)(you)１０００倍(bei)(bei)(bei)(bei)(bei)液、９０％晶體敵(di)百蟲(chong)１０００倍(bei)(bei)(bei)(bei)(bei)液、２５％殺蟲(chong)雙水劑(ji)(ji)１０００倍(bei)(bei)(bei)(bei)(bei)液、２０％速(su)滅殺丁乳(ru)(ru)(ru)油(you)(you)(you)４０００～５０００倍(bei)(bei)(bei)(bei)(bei)液、２．５％敵(di)殺死乳(ru)(ru)(ru)油(you)(you)(you)４０００～５０００倍(bei)(bei)(bei)(bei)(bei)液、０．３％印楝乳(ru)(ru)(ru)油(you)(you)(you)１０００倍(bei)(bei)(bei)(bei)(bei)液等噴霧防(fang)治。