广东丘陵山地沙糖桔果园土壤肥力调查与分析

Investigation and Analyse on the Soil Fertility in the Mainly Cultivation Area of Citrus reticulata Blanco cv. shatangju in Hilly and Mountainous of Guangdong

对广东省沙糖桔主产区的15个丘陵山地沙糖桔果园的土壤肥力状况,通过取土样分析其理化性质。结果表明:沙糖桔主产区丘陵果园大部分土壤酸性重,有效氮和有效磷含量中等偏低,有机质、有效钾、钙、硼和锌缺乏,有效铁和锰含量高。为提高沙糖桔产量和品质,应增加有机质、钾和钙肥施用量,并提出了通过试验确定合理施肥量的建议。

The soil fertility,physics and chemistry on 15 Citrus reticulata Blanco cv.shatangju orchards in the mainly cultivation area in Guangdong were investigated.The results showed that the soil pH value was low and not suitable for citrus growth,the available N and P were in medium range or low range,the soil organic matter and the available contents of K,B,Mg,Ca and Zn were deficient but the contents of Fe and Mn were high range or excess range in mainly cultivation area orchards.In order to increasing the fruit yields and quality of shatangju,it should fertilize more organic fertilizer,B,Mg,Ca,Zn and K manure and some measures which were equitable fertilization and identifying fertilized amount by trail were also suggested.