红壤是强酸性土壤,一般不宜种植麦类等不耐酸作物。因此,在红壤开垦初期,通常作水田用,以促使土壤酸度下降和复盐基化,作物产量也随之上升。但经数年之后,尤其在化肥用量增多和有机肥用量减少的情况下,土壤酸性又有重新回升之势,严重影响麦类生长,阻碍产量的提高。现将我们对第四纪红色粘土发育的红壤,在种植近10年水稻后又种植麦类作物的表现所做的调查,报告如下。 Red soils are strongly acidic soils that are generally unsuitable for planting non-acid crops such as wheat. Therefore, in the early stage of reclamation of red soil, paddy fields are usually used to promote the reduction of soil acidity and double salt formation, and crop yields also increase. But after a few years, especially in the case of an increase in the amount of chemical fertilizer and a decrease in the amount of organic fertilizer, the acidity of the soil has again picked up and severely affected the growth of wheat and hindered the improvement of yield. We are now on the Quaternary red clay development of red soil, planting nearly 10 years after planting rice crops after the performance of the survey, the report is as follows.