摘要
2003年在宁夏银川市选择具有代表性的灌淤土为供试土壤,对不同种植年限蔬菜温棚土壤钾素状况进行了调查研究。结果表明,蔬菜温棚0～30cm土层土壤全钾、缓效钾含量与农田和露地菜田变化不大,但速效钾含量变化较大,其中新建温棚较农田高2.8倍,3a温棚较农田高2.9倍,8a、15a温棚分别较农田高1.4、1.7倍。在蔬菜温棚中随着土层深度的增加,蔬菜温棚土壤全钾、速效钾、缓效钾含量均有不同程度减少,其中全钾、缓效钾减幅不大,速效钾减幅较大。
The irrigation-warping soil of conformation and different space of soil potassium in vegetable greenhouse was studied to combine analysis assay at Yinchuan,Ningxia in 2003.The main results showed that the content of total K,unavailable K in vegetable greenhouse was not difference as much as in farm on 0～30 cm soil.The inorganic K was higher in vegetable soil than in farm soil.The inorganic K in newly-built glasshouse was 2.8 times as much as in farm.The inorganic K in 3 a glasshouse was 2.9 times as much as in farm.The inorganic K in 8 a and 15 a glasshouse 1.4 and 1.7 times as much as in farm.As the soil profile growth, total K,inorganic K,unavailable K have been decreased.in different vegetable soil.Total K unavailable K have been decreased gradually as well as inorganic K has been decreased significant
出处
《甘肃农业科技》
2005年第7期47-49,共3页
Gansu Agricultural Science and Technology
基金
宁夏回族自治区自然科学基金项目(ZD3)资助的部分内容
关键词
菜田
农田
土壤钾
形态
研究
Vegetable soil
Farm land
Soil potassium
Conformation
Research
