【摘要】 对水稻免耕抛秧新技术推广应用以来病虫发生严重的原因进行了分析。越冬病虫基数大,免耕抛秧田偏施氮肥及抛秧田生长的特殊性,地区气候适宜病虫生长,药剂防治不当等,都会造成危害严重。针对重发原因,提出了相应的防治对策。更多还原

【Abstract】 The occurring reasons of diseases and insect pests in no-tillage throwing seedling paddyfield were analyzed,which were large population base of over-winter diseases and insect pests,partial applying nitrogen fertilizer in no-tillage throwing seedling paddyfield,growing particularity of throwing seedling paddyfield,suitable climate for growth of diseases and insect pests in local area,and inappropriate chemical control methods,etc..According to these occurring reasons,the corresponding control strategies were proposed.更多还原