宁明县正在进行耕作制度改革,植物的茬口、植期、品种、田间管理都有较大的变动,生态平衡将被打乱,农作物的主要病虫害亦将出现新的发生趋势和特点,特别是改制之初,新旧耕作制处于更替过渡阶段,苗 Ningming County is in the midst of reforming the farming system. The stubbles, planting periods, varieties and field management of plants are undergoing major changes. The ecological balance will be disrupted. New pests and diseases of crops will also have new trends and characteristics. In particular, At the beginning of the system reform, the old and new farming systems were in the process of replacement and transition