摘要
为摸清锦屏县耕地土壤养分状况,以便改良土壤和指导施肥,对锦屏县耕地土壤养分状况及变化进行了研究。结果表明:耕地土壤有机质平均含量为39.4 g/kg,含量≥30 g/kg的面积为13 588.9 hm2,占总耕地面积的80.4%;全氮平均含量为2.4 g/kg,含量≥2 g/kg的面积为12 440.9 hm2,占总耕地面积的73.6%;有效磷平均含量为22.4 mg/kg,含量≥10 mg/kg的面积为15 129 hm2,占总耕地面积的89.6%;速效钾平均值为61.2 mg/kg,含量≥100 mg/kg的面积为1 282.2 hm2,占总耕地面积的11.67%。与第2次土壤普查数据相比,有机质含量变化较小,全氮含量略有提高,有效磷含量显著提高,速效钾含量大幅度降低。针对养分含量的变化及原因,提出了"稳氮、控磷、补钾、增施有机肥"的施肥建议。
The nutrient status and change of arable soil were studied to provide the scientific basis for soil improvement and rational fertilization in Jinping in 2009.The results show that the average content of organic matter,total nitrogen,available P and available K is 39.4g/kg,2.4g/kg,22.4mg/kg and 61.2mg/kg respectively,the area of soil with ≥30g/kg organic matter content,≥2g/kg total nitrogen content,≥10mg/kg available P and ≥100mg/kg available K is 13588.9hm2,12440.9hm2,15129hm2 and 1282.2hm2,accounts for 80.4%,73.6%,89.6% and 11.67% of total arable soil area separately.Compared with 1983,the soil organic matter content has no difference,the soil total nitrogen content increases a little,the soil available P content increases significantly and the soil available K reduces greatly.The fertilization recommendation of stabilizing nitrogen,controlling P,supplementing K and applying organic fertilizer is proposed according to causes of soil nutrient change in Jinping county.
出处
《贵州农业科学》
CAS
北大核心
2011年第8期113-116,共4页
Guizhou Agricultural Sciences
基金
农业部
财政部测土配方施肥补贴资金项目"锦屏县耕地地力评价专题技术研究"[黔财农(2007)44]
关键词
测土配方施肥
耕地
土壤养分状况
施肥建议
锦屏县
soil testing and formulated fertilization
arableland
soil nutrient status
fertilizer recommendation
Jinping county
作者简介
龙胜碧（1968-）男，农艺师，从事农业技术推广工作。E-mail：yumeiz@21cn．com
