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长期定位施肥对设施菜田土壤肥力的影响 预览 被引量:8

Effect of Long-term Stationary Fertilization on Soil Fertility in Plastic-tunnel
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摘要 本试验是长期定位施肥的继续,在保持原有的几个偏施氮肥处理的基础上,于1997年增加了配施磷、钾肥的处理.研究表明:长期单施无机N肥(不施有机肥)土壤有机质含量下降,施N量越大下降越多,而有机肥与N肥配施更有利于土壤有机质的提高.P肥的后效很长,不只是对当季作物,而且对以后的作物都有很好的后效.速效K含量下降迅速,因此在土壤有机质含量较低的情况下应特别注意K素的施用.长期偏施无机N肥加速了土壤的板结,破坏了土体的正常结构,耕性变坏. This experiment was a succession of long-term stationary fertilizing. Based on the prior treatments of nitrogen fertilizer application, it further included the treatments of applying P and K fertilizer. The findings were as follows: A long-term mono-application of inorganic N fertilizer (without application of organic fertilizer) coursed a decline of the content of organic substance in soil. The more amount of N fertilizer applied, the sharper the organic substance declined. The mixing application of organic fertilizer and N fertilizer increased the content of organic substance. P fertilizer has a long-term effect, which was beneficial to both present plants and the plants thereafter. The content of available K declined sharply. Therefore, attention should be paid to apply the K if the organic content in soil was low. A long-term N fertilizer application accelerated the hardenning of soil, destroyed the soil normal structure and made cultivation performance deteriorate .
作者 高慧 葛晓光 Gao Hui 1,2 , Ge Xiaoguang 1( 1Shenyang Agricultural University, Liaoning 110161; 2Huaiyin Institute of Technology)
出处 《中国蔬菜》 北大核心 2004年第6期 6-10,共5页 China Vegetables
基金 国家自然科学基金
关键词 长期定位施肥 设施蔬菜 土壤肥力 土壤容重 Stationary fertilization, Nutrient fertility in soil, Bulk density in soil
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  • 1Bolland. The long-term residual value of rock phosphate and superphosphate fertilizers for various plant species under field conditions.Fertilizer Research, 1989, 20(2):89-100 被引量:1

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