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春播开始,也是各种作物种苗病害及苗期侵染病害发生的开始。由于去年低温、寡照、秋雨多,大部分作物种子成熟度较
Spring sowing, but also a variety of crop seedling disease and seedling stage of the onset of disease. Due to last year’s low temperature, low light, autumn rain, most of the crop seed maturity