贵州省修文县猕猴桃果园土壤养分分析

Analysis on Soil Nutrient Availability of Kiwifruit Orchards in Xiuwen County of Guizhou Province

分析贵州省修文县猕猴桃(Actinidia chinensis)生产地土壤养分现状,为猕猴桃果园合理施肥提供部分理论依据。研究结果表明,修文县猕猴桃果园的土壤有机质平均含量46.53 g/kg,超过61%的土壤有机质含量达到适宜的要求;土壤全氮含量较高,有超过一半果园的土壤碱解氮含量大于120 mg/kg,处于适宜水平;土壤碱解氮含量丰富和很丰富的占25.70%,缺乏的占29.17%;果园土壤的速效磷平均含量为20.01 mg/kg,不能满足猕猴桃生产需要;土壤中速效钾含量处于适宜状态范围内的土壤样本占40.2%,近2/5的土壤缺速效钾。建议在今后的施肥过程中,对磷、钾肥增加施用量,氮肥维持施用量,注重有机肥配施;结合果园养分丰缺,做到有的放矢,科学合理地施肥,以提高肥料的利用率和猕猴桃的产量品质。

Analysis on soil nutrient status of kiwifruit production in Xiuwen County of Guizhou Province provided some theoretical basis for rational fertilization.The results showed that average soil organic matter content was 46.53 g / kg,more than 61% of the soil organic matter content of the average requirements;soil total nitrogen content was high,with more than half of the orchard soil available nitrogen content greater than 120 mg / kg of average level at the appropriate level;The soil with high nitrogen content accounted for 25.70%,while that with poor nitrogen content constituted 29.17%;Orchard soil with an average content of available phosphorus 20.01 mg/kg cannot meet the needs of kiwifruit production;soil K content in suitable soil samples within the state accounted for 40.2%,nearly 2 / 5 of the soil lack of available potassium.It is recommended that phosphorus and potassium fertilizer be increased,nitrogen fertilizer maintained,and organic fertilizers combined in the future fertilization process,and that scientific and rational fertilization be applied on the basis of orchard soil fertility in order to improve fertilizer utiliztion and kiwifruit quality and yield.