水稻土是一个特殊土壤。在水旱轮作情况下,水稻与旱作对土壤环境的要求虽有共同之处,但也有不同之点。因此某些对水稻有利的性质对旱作不一定有益。如苏南地区羣众反映:“鸟山土是稻麦双收”,“小粉土是出麦不出稻”,而低洼地区的“灰芦底土即出稻 Paddy soil is a special soil. In the case of rotation and drought, the requirements of paddy and dryland on the soil environment have something in common, but there are also differences. Therefore, some of the favorable properties of rice are not necessarily beneficial to dry farming. Such as the southern region of the masses reflect: “birds and soil is rice and wheat double income”, “little silt is wheat out of the rice,” and low-lying areas of "