博罗县下村农场土壤养分概况

本文探讨了博罗县下村农场土壤养分含量概况，为今后长期试验研究提供基本理论依据。分析结果表明：下村场土镶有机质含量低，土壤酸性强，不利于土壤肥力的发挥，土壤全量养分Ｎ、Ｐ、Ｋ含量不平衡，速效养分虽然有些较高以至很丰富，但其含量范围大，有相当部分土壤仍很低，所以其供应水平亦很不平衡。而坡地赤红壤则全氮低，全磷不高，全钾则高低差异很大．至于果园土壤（即耕地），养分含量亦很不一致，相差极为悬殊，没有一定的规律性．土壤养分的高低水平，对作物的养分供应起很大的作用。由于下村场土壤养分的不均衡性，在生产管理上，应因地制宜，协调养分含量，以提高施肥效果。根据下村场土壤养分含量的特点，应增施有机肥，改良土壤，并适施石灰以改善土壤酸性，以利于作物的正常生长．

SURVEY OF SOIL NUTRIENTS OF XIACUN FARM IN BOLOU COUNTY

This paper deals with the characteristics of soil nutrient contents of Xiacun Farm, Bolou county, Guangdong. Analytical results show that, the content of soil organic matter is lower; the soils present strong reaction, being of unbenefit to utilization of potential fertility; the total N,P, and K, as well as available nutrients are in imbalance. It is found that in latored soils in slope land, the content of total N and P is lower, total K varies remarkably; in orchard soils, the difference in nutrient contents are so great that there are no regularity of them. Based on the analytical results of soil nutrients,it is suggested that more attention should be paid to applying fertilizer in the light of the local soil conditions, more organic manure and appropriate amount of lime should be applied to soils in order to improve soil and promote plant growth.