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选择了秸秆覆盖、棚膜覆盖和土层覆盖等3种农家堆肥模式,以无覆盖为对照,比较了各种模式中全氮、铵态氮、硝态氮、有机质、温度和pH值变化.结果表明,随着堆肥的进行,各种模式全氮呈现先下降再上升、铵态氮先上升再下降、硝态氮一直下降,并且最后趋于稳定.棚膜堆肥的全氮、铵态氮、有机质含量一直高于其他处理,而硝态氮含量低于其他处理,因而是一种值得推荐的农家堆肥模式.
Three kinds of farmhouse composting modes including straw mulching, plastic film mulch and soil mulching were selected. Compared with no mulch, the changes of total nitrogen, ammonium nitrogen, nitrate nitrogen, organic matter, temperature and pH were compared. The results showed that with the composting progressed, the total nitrogen in all modes decreased first and then increased, the ammonium nitrogen first increased and then decreased, the nitrate nitrogen decreased continuously and finally stabilized.The total nitrogen and ammonium nitrogen , The content of organic matter has always been higher than other treatments, while the content of nitrate nitrogen is lower than other treatments, so it is a recommended model of farmhouse composting.