摘要
主要对陕西省榆林市3个苹果主产县(绥德、子洲、米脂)15个果园0~60 cm土层土壤养分的含量进行了研究分析,并比较不同县区果园之间的土壤养分含量的差异。结果表明,绥德县5个果园0~60 cm土层土壤速效氮磷钾平均含量分别为28.5,33.9,144.2 mg/kg,土壤pH值为7.18,有机质含量为0.5%;子洲县5个果园0~60 cm土层土壤速效氮磷钾平均含量分别为21.47,39.46,87.84 mg/kg,土壤pH值为7.32,有机质含量为0.37%;米脂县5个果园0~60 cm土层土壤速效氮磷钾平均含量分别为35.22,15.10,61.07 mg/kg,土壤pH值为8.68,有机质含量为0.42%。3个县区除有机质含量差异不显著外,其余土壤成分都有不同程度的差异,速效磷含量均比较丰富,速效钾含量也在适宜水平以上,而速效氮和有机质含量处于正常水平以下,属于缺乏状态。土壤pH值除米脂外其余县区果园较适合果树的生长。在以后的施肥过程中应该增施有机肥,提高氮肥利用率,适当增施钾肥。
In this study, we analyzed and compared the 0-60 cm soil layers nutrient content in 15 orchards of 3 major apple production base in the county（Suide, Zizhou and Mizhi）in Shaanxi Yulin. The results showed that the available nitrogen, phosphorus and potassium were 28.5, 33.9, 144.2 mg/kg,respectively, the soil pH was 7.18 and the organic matter content was 0.5% in the 0-60 cm soil layers of 5 orchards in Suide county. The available nitrogen, phosphorus and potassium were 21.47,39.46,87.84 mg/kg, respectively,the soil pH was 7.32 and the organic matter content was 0.37% in the 0-60 cm soil layers of 5 orchards in Zizhou county and the available nitrogen, phosphorus and potassium were 35.22,15.10,61.07 mg/kg, respectively, the soil pH was 8.68 and the organic matter content was 0.42% in the 0-60 cm soil layers of 5 orchards in Mizhi county. In addition, the other soil components had different degrees of difference except for the organic matter content, the content of available phosphorus was relatively abundant and the content of available potassium was in the appropriate level, but the available nitrogen and organic matter content was below the normal level, belonged to the lack of state. The other counties soil pH was more suitable for the growth of fruit trees in the orchard except for Mizhi county. In the future,organic fertilizer should be added, should improve the nitrogen use efficiency and increase potassium fertilizer properly.
作者
相微微
段义忠
王建武
张建军
XIANG Weiwei DUAN Yizhong WANG Jianwu ZHANG Jianjun(College of Life Science, Yulin University, Yulin 719000, China Yulin Fruit Industry Technology Extension Center, Yulin 719000, China)
出处
《山西农业科学》
2017年第9期1503-1506,共4页
Journal of Shanxi Agricultural Sciences
基金
陕西省科技厅农业科技创新与攻关项目(2015NY136)
关键词
苹果园地
土壤养分
氮磷钾
榆林
apple orchard
soil nutrients
nitrogen
phosphorus and potassium
Yulin
