凉山州荞麦燕麦产区土壤养分监测及施肥建议

对凉山州荞麦燕麦的集中产区昭觉、美姑、盐源、越西、冕宁取代表性土样测定有机质、全氮、有效氮、速效磷、速效钾和p H值。结果表明:产区土壤p H的变幅为6.59~4.53;各指标分别为:有机质4.62%、全氮0.22%、速效氮298.92 mg/kg、速效磷25.40 mg/kg、速效钾199.82 mg/kg。同时对播种前和收获后的土壤养分进行监测对比,提出凉山州燕麦荞麦产区施肥原则。

Suggestions of Soil Nutrient Monitoring and Fertilization in Liangshan Buckwheat Oat Area

The representative soil samples of organic matter,total nitrogen,available nitrogen,available phosphorus,available potassium and p H are determined from the Liangshan buckwheat oats centralized area Zhaojue,Meigu,Yanyuan,Yuexi,Mianning.The results show that the amplitude of PH in soil was 6.59~4.53;each index respectively averaged：organic matter4.62%,total nitrogen 0.22%,available nitrogen 298.92 mg/kg,available P25.40 mg/kg,available K 199.82 mg/kg.At the same time,monitoring and contrast on soil nutrient before planting and after harvest,proposes fertilizer principles to Liangshan oats buckwheat region.