元月下旬,笔者到农村调查时发现,部分小麦地的麦苗叶片有局部田块或整块麦地发黄的现象,不少农民朋友问道,是病虫害还是其它什么原因造成的?是否需要打药或者施肥? In late January, the author found in the rural investigation that some of the wheat seedling leaves had yellow patches of land or whole grains. Many peasant friends asked whether pests or other causes were caused by the need to fight drugs Or fertilization?