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一、红壤是祖国巨大的自然财富 我国长江以南各省都有很多红色泥土的荒地,科学工作者初步确定把它叫做“红壤”。这类荒地的总面积估计约有一亿亩,江西省境内就约占1500万亩。拿江西来说,如果把这类荒地开垦利用起来,种上庄稼,以每亩平均收200斤计算,就可收到30亿斤粮食。所以,红壤是祖国巨大的自然财富,等待着我们发掘。 据分析,这类荒地的泥土中含鉄质很多,所以带红色,它的酸度高,含磷少,特别缺乏有机质,土壤组织很坏,保水保肥力很弱。晴天未耕地的表土易结成硬壳,已耕地的土易结成硬块,一下雨又
First, the red soil is a huge natural wealth of the motherland The provinces south of the Yangtze River in China have a lot of red soil of the wasteland, scientists initially identified it as “red soil.” The total area of such wasteland is estimated to be about 100 million mu and about 15 million mu in Jiangxi Province. Take Jiangxi for example, if we reclaim such wasteland and plant it on crops, we will receive 3 billion kilograms of grain at an average of 200 kilograms per mu. Therefore, the red soil is a huge natural wealth of the motherland, waiting for us to explore. According to the analysis, the wasteland of this kind of wasteland contains a lot of kudzu, so it is reddish, its acidity is high, phosphorus is low, organic matter is particularly lacking, the soil tissue is very bad, and the water and soil fertility is weak. The topsoil that is not cultivated in sunny days is easy to form a hard shell, and the soil of cultivated land is easy to form lumps