CAJ | 학술논문

对杂草稻几种典型性状及危害特性进行了分析。结果表明，危害重的杂草稻落粒性不一定比常规稻强；刚收获的杂草稻种子有一定的休眠期且种子活性期长，而常规稻无休眠期且种子活性期有限；上年杂草稻多的田块，若不采取措施，直播稻、套播稻田杂草稻的危害可达28%以上，甚至99%以上；埋于土下未出苗的杂草稻及常规种子经1季水稻生长后，会碳化而失去活力；采用诱发杂草稻，在前茬小麦收获后及时用41%草甘膦3000 ml/hm2杀灭已出苗的杂草稻，可有效防止杂草稻的危害及蔓延。
대잡초도궤충전형성상급위해특성진행료분석。결과표명，위해중적잡초도락립성불일정비상규도강；강수획적잡초도충자유일정적휴면기차충자활성기장，이상규도무휴면기차충자활성기유한；상년잡초도다적전괴，약불채취조시，직파도、투파도전잡초도적위해가체28%이상，심지99%이상；매우토하미출묘적잡초도급상규충자경1계수도생장후，회탄화이실거활력；채용유발잡초도，재전치소맥수획후급시용41%초감련3000 ml/hm2살멸이출묘적잡초도，가유효방지잡초도적위해급만연。
In this study, several typical tralts of weedy rice and its damage charac-teristics were analyzed. The resuIts showed that the shattering of weedy rice was sometimes weaker than that of conventional rice. The newIy-harvested weedy rice seeds have certaln dormant period and a Iong active period, whiIe the conventional rice seeds have no dormant period but have a Iimited active period. In the direct seeding and intercropping rice fields where weedy rice occurs seriousIy Iast year, if not controI ed timeIy, weedy rice may caused a damage above 28%, sometimes even above 99%. After one season of cuItivation, the underground weedy rice and conventional rice seeds wiI be carbonized, Iosing their activity. The germination of underground weedy rice can be first induced, and when the Iast-season wheat is harvested, the germinated weedy rice can be kiI ed with 41% gIyphosate (3 000 mI/hm2), thus the damage and expansion of weedy rice wiI be effectiveIy controI ed.