湖北省板栗林地土壤养分状况调查研究

Researches on the Status of Soil Nutrients in the Castanea mollissima Blume Forest of Hubei Province

摘要:

摘要：对湖北省板栗主产区林农习惯施肥调查结果表明：板栗生产中钾肥用量极少，磷肥用量偏低，而氮肥相对较多。应用GPS定位，采集湖北省28个县市板栗产区土壤样品112个；以常规方法分析了各土样pH值、有机质及土壤有效N、有效P、有效K、交换性Ca、交换性Mg、有效Fe、有效Mn、有效Cu和有效Zn含量。结果表明：湖北省板栗产区80%左右以上的土壤pH及土壤有效N含量适宜于板栗生长，但50%以上的土壤有机质低于15 g/kg，生产中应通过施用有机肥和采取抚育管理措施来提高土壤有机质含量；有效P和有效K含量均较低，其低量比率分别为56.3%和73.11%，生产中应多施用P、K肥料。

Abstract:

Abstracts:We investigated Castanea mollissima fertilization practices in the main production areas in Hubei Province, and the results showed that the potassium fertilizer application amount is extremely few, and the phosphate fertilizer application amount is somewhat low, but the nitrogenous fertilizer application amount is relatively large. 112 soil samples were taken through GPS positioning in Hubei province, and 11 indicators of soil properties were detected. The 11 indicators were the soil pH, the soil OM, the soil available N, P, K, Ca, Mg, Fe, Mn, Cu and Zn content, which were detected by regular methods. The results showed that more than eighty percent of the soil pH and soil available N content were appropriate for chestnut growth, but more than half of soil organic matter was less than 15 g/kg, which indicated that more organic fertilizer should be applied to improve the soil organic matter content in chestnut forest of Hubei Province. Both soil available P and available K contents were too low for the chestnut to grow, and the ratios of their contents in the low content range were 56.3% and 73.11%, which indicated that relatively more P, K fertilizer should be applied to balance the large number of nutrients.