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由于多种原因,稻田里常有枯心苗出现,只有正确识别这些枯心苗,才能采取相应的措施加以防治。 一、螟害枯心苗。水稻在苗期或分蘗阶段,螟虫易钻蛀稻秆为害,使幼嫩的心叶萎蔫,形成枯心苗。其特征是稻株下部有虫孔或虫粪,剥开稻茎常可见到幼虫,枯心易拔起。螟害造成的枯心苗一旦达到5％以上时,就应及时喷药防治。
For a variety of reasons, dry seedlings often appear in paddy fields. Only by correctly identifying these dead seedlings can we take appropriate measures to prevent them. First, the stem bore seedlings. Rice seedling or tillering stage, stem borers easy to bore moth damage, the young heart leaves wilting, the formation of dry seedlings. The utility model is characterized in that the lower part of the rice plant has wormholes or insect excrement, the larvae can often be seen when the rice stems are stripped off, and the dry heart can be easily pulled up. Borer damage caused by borer once reached 5% or more, it should be timely spraying prevention and treatment.