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我省红壤性水田约占全省稻田面积的65%,而亩产500斤以下的红壤性低产稻田,尚有600多万亩,影响了我省农业生产的发展。红壤性低产水稻土的主要缺陷是酸、瘦、板结。其主要形成原因是土壤缺乏有机质。为了做好红壤性低产田的改良工作,我们曾对红壤性稻田低产变高产和双季稻绿肥制土壤有机质年周期消长规律及其调节技术进行了研究。现将结果报道如下:
The red paddy fields in our province account for about 65% of the total paddy field area in the province, while more than 600 million mu of red-paddy low-yield paddy fields yield less than 500 kg per mu have affected the development of agricultural production in our province. The main defects of red soil low yield paddy soil are acid, lean and compaction. The main reason is that the soil lacks organic matter. In order to improve the low-yielding and low-yielding fields, we have studied the regulation and regulation of the annual cycle of soil organic matter in reddish-brown rice and the double-season rice manure. The results are reported as follows: