设为首页  |   加入收藏
引用本文:
【打印本页】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 214次   下载 90 本文二维码信息
码上扫一扫!
分享到: 微信 更多
长三角地区设施蔬菜施肥现状及土壤性状研究
韩沛华1, 闵 炬1, 诸海焘2, 施卫明1
1.土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所);2.上海市农业科学院生态环境保护研究所
摘要:
针对近年来长三角地区设施菜地规模化程度逐渐加剧,对规模化和分散型种植方式开展调研,阐明不同种植方式下的施肥现状、土壤理化性状的变化情况。本文采用调查问卷和现场取样的调查方法,在以上海市松江区和苏州市支塘镇为代表的规模化种植区以及以宜兴市周铁镇、常州市武进区为代表的分散型种植区开展有机肥和化肥的施肥情况调查,并分析土壤pH、EC值以及土壤碱解氮、有效磷、速效钾等速效养分含量。结果表明,规模化种植方式周年肥料施用总量比分散型种植低17.8%,其中有机肥比分散型种植低843.8 kg/hm2,化肥比分散型种植高34.5 kg/hm2;与分散型种植方式相比,规模化种植周年投入的氮肥(N)低了41.8%,而磷肥(P2O5)和钾肥(K2O)分别高了6.8% 和38.3%。在土壤的理化性状上,规模化种植方式下的土壤酸化、盐渍化问题较分散型种植严重,土壤pH和电导率分别为5.2和490.7 μS/cm,土壤碱解氮、有效磷和速效钾平均含量为286.3、322.3和374.2 mg/kg,比分散型种植分别高了123.9%、26.4% 和68.7%。鉴于此,规模化种植区应大力推广叶面肥和有机水溶肥水肥一体化等减施增效措施,可能有利于维持规模化种植下设施土壤的可持续利用。
关键词:  有机肥  化肥  土壤养分  酸化  次生盐渍化
DOI:10.13758/j.cnki.tr.2020.05.017
分类号:S158.2
基金项目:国家重点研发计划项目(2016YFD0201001)资助。
Fertilization Status and Soil Physiochemical Properties of Greenhouse Vegetable System in Yangtze River Delta
HAN Peihua1, MIN Ju1, CHU Haitao2, SHI Weiming1
1.State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences;2.Institute of Eco-Environment and Plant Protection, Shanghai Academy of Agricultural Science
Abstract:
In view of the gradual intensification of greenhouse vegetable fields in the Yangtze river delta in recent years, a survey was conducted to disclose the fertilization status and the changes of soil physiochemical properties of greenhouse vegetable system under different cultivation. The questionnaire and field sampling were used for the survey, Songjiang district of Shanghai and Zhitang town of Suzhou were selected to represent the large-scale cultivation, while Zhoutie town of Yixing and Zhihu harbor of Wuxi selected to represent the dispersed cultivation, the fertilization of organic and chemical fertilizers were investigated, and soil pH, EC, and the contents of soil available nitrogen, phosphorus, potassium and other nutrients were analyzed. The results showed that the total amount of fertilizer applied and the organic fertilizer applied for the large-scale cultivation were 17.8% and 843.8 kg/hm2 lower than those in the dispersed cultivation, while the chemical fertilizer was 34.5 kg/hm2 higher applied for the former than for the latter. Compared with the dispersed cultivation, the annual input of nitrogen fertilizer (N) was 41.8% lower, while the inputs of phosphate (P2O5) and potassium (K2O) fertilizers were 6.8% and 38.3% higher for large-scale cultivation, respectively. The problems of soil acidification and salinization were more serious for the large-scale cultivation than the dispersed cultivation, for the large-scale cultivation, soil pH and EC were 5.2 and 490.7 μS/cm, the averaged contents of soil available N, P2O5 and K2O were 286.3, 322.3 and 374.2 mg/kg, higher than the dispersed cultivation by 123.9%, 26.4% and 68.7%, respectively. In view of this, the foliar fertilizer, organic water-soluble fertilizer and fertigation should be greatly promoted, which may be beneficial to maintain the sustainable utilization of greenhouse vegetable fields under large-scale cultivation.
Key words:  Organic fertilizer  Chemical fertilizer  Soil nutrients  Acidification  Secondary salinization

您是第3535714位访问者
版权所有 © 《土壤》编辑部
本系统由北京勤云科技发展有限公司设计   京ICP备09084417号