干旱地区农业研究2016，Vol.34Issue(5)：166-171,179,7.DOI:10.7606/j.issn.1000-7601.2016.05.25
陕西省苹果园土壤肥力与施肥现状评估
Evaluation on the situation of fertilization and soil fertility in apple fields in Shaanxi Province
摘要
Abstract
In order to understand the current situation of fertilization and nutrients resource input problems for farm -ers in apple fields in Shaanxi Province ,and to put forward countermeasures to solving these problems ,household survey was used to evaluate the situation by collecting data from the project of soil testing and formulated fertilization from 2005 to 2009 .21 counties and 7141 households in total were included in this study .The results showed that the contents of soil organic matter ,available nitrogen ,available phosphorus and available potassium in Shaanxi were 12 .6 g·kg - 1 , 56 .9 mg·kg - 1 ,18 .0 mg·kg - 1 and 151 .6 mg·kg - 1 ,respectively .Compared with those in 1980s ,the indexes were in-creased by 17 .8% ,16 .1% ,168 .7% and 2 .2% ,respectively .This indicated that the situation of fertilization in apple fields had been improved .In addition ,the application rates of chemical fertilizer from the Guanzhong irrigated area to the Loess plateau area of northern Shaanxi had decreasing trends .Overall ,the current situation of household fertilization in apple fields in Shaanxi Province was that nitrogen fertilizer inputs were excessive ,phosphate and potassium fertilizer in-puts were reasonable or insufficient ,and the yields of apple field from the Guanzhong irrigated area to the Loess plateau area had decreasing trends .The nitrogen and phosphorus surplus in Shaanxi were 196 .5 kg·hm - 2 and 205 .5 kg·hm - 2 , respectively ,but the potassium deficiency was 12 kg·hm - 2 .Therefore ,increase of potassium fertilization should be con-cerned for households in Shaanxi Province .关键词
陕西省/土壤肥力/施肥量/苹果/产量Key words
Shaanxi Province/soil fertility/rate of fertilizer application/apple/yield分类
农业科技引用本文复制引用
杨玥,同延安,路永莉,林文,梁婷,陈联英..陕西省苹果园土壤肥力与施肥现状评估[J].干旱地区农业研究,2016,34(5):166-171,179,7.基金项目
陕西省测土配方施肥项目 （）
