中低产田的主要类型及改良措施张妍我国地貌类型多样，各地自然环境差异较大，因此形成了不同类型的中低产田，其制约农业增产的因素既有共同点，也有不同点。所以，改造中低产田要针对不同类型采取有效的措施。二缺肥类。主要指灌溉条件较好的土地。原因是对土地采取掠夺... The main types of middle and low yield fields and their improvement Zhang Yan There are many different types of landscapes in China. There are different types of middle and low yield fields, and the factors that restrict the agricultural production increase are different from each other. Therefore, the transformation of low-yield fields to take effective measures for different types. Two lack of fat. Mainly refers to the better irrigation conditions of the land. The reason is to plunder the land ...