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为了研究广西钟山县主要水稻土利用与肥力变化情况,在回龙、石龙、同古、燕塘等镇做了该县主要水稻土利用与肥力变化监测研究。结果表明,2008—2013年钟山县主要水稻土每hm2造平均施N 170.9 kg、P2O5 67 kg、K2O 103.5 kg,分别比2008年造平均施肥增加27.63%、103.96%、21.34%;6年平均土壤p H=6.2,含有机质35.4 g/kg、全氮2.12 g/kg、全磷0.51 g/kg、速效磷23.7 mg/kg、缓效钾167 mg/kg、全钾16.8 g/kg、速效钾53 mg/kg,分别比2008年上升8.77%、2.91%、12.17%、155.00%、33.15%、0.60%、-5.62%、-10.17%。
In order to study the changes of the utilization and fertility of major paddy soils in Zhongshan county, Guangxi, Huiyong, Shilong, Tonggu and Yantang townships were used to monitor the changes of their utilization and fertility. The results showed that the main paddy soils of Zhongshan County in 2008-2013 were N 170.9 kg, P2O5 67 kg and K2O 103.5 kg, respectively, an increase of 27.63%, 103.96% and 21.34% respectively over the average fertilization in 2008, Soil p H = 6.2, organic matter 35.4 g / kg, total nitrogen 2.12 g / kg, total phosphorus 0.51 g / kg, available phosphorus 23.7 mg / kg, slow potassium 167 mg / kg, total potassium 16.8 g / Potassium 53 mg / kg, up 8.77%, 2.91%, 12.17%, 155.00%, 33.15%, 0.60%, -5.62%, -10.107% over 2008 respectively.