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中国农学通报

中国农学通报 ›› 2013, Vol. 29 ›› Issue (6): 137-141.doi: 10.11924/j.issn.1000-6850.2012-1291

• 农学 农业基础科学 • 上一篇    下一篇

施磷对不同间作体系间作优势与磷肥利用的影响

陈磊 张朝春 张信吉 秦雪梦 焦念元   

  • 收稿日期:2012-04-06 修回日期:2012-05-14 出版日期:2013-02-25 发布日期:2013-02-25
  • 基金资助:
    国家自然科学基金重大项目“作物高效利用磷的根际过程及其调控机制”(30890130)；农业部公益性行业科研专项“现代农作制模式构建与配套技术研究示范”(201103001)。

Effects of Phosphate Fertilizer on Intercropping Advantage and Phosphate Fertilizer Utilization of Different Intercropping System

  • Received:2012-04-06 Revised:2012-05-14 Online:2013-02-25 Published:2013-02-25

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摘要： 为了探明施磷水平对不同间作体系产量间作优势和磷肥利用的影响，在河北曲周主要研究了施磷对玉米‖蚕豆、玉米‖大豆和玉米‖油菜3种间作体系土地当量比(LER)、磷吸收量、磷肥吸收效率和磷间作优势的影响。结果表明：玉米‖蚕豆的LER是1.24~1.31，玉米‖油菜的LER是1.20~1.24，玉米‖大豆的LER是1.11~1.15，均大于1，具有明显的间作优势；3个磷水平下，吸磷量表现为玉米‖大豆>玉米‖蚕豆>玉米‖油菜，除玉米‖油菜间作体系外，比单作玉米分别高21.5%%~40.2%和13.3%~22.9%，且均随着施磷量的增加而增加，但增加幅度降低；3种间作体系均具有明显的磷间作优势，除玉米‖大豆间作体系外，施磷后均降低；磷肥吸收效率除玉米‖蚕豆在施磷90 kg/hm2外均低于单作玉米，并且随着施磷量的增加而降低。这表明，通过活化磷能力强的作物与玉米间作可以提高土壤难溶性磷的利用，玉米‖大豆和玉米‖蚕豆比玉米‖油菜效果好，适宜的施磷量为90 kg/hm2。

关键词: 序列分析, 序列分析

Abstract: A field experiment was conducted to investigate the effects of phosphate fertilizer on LER, the P absorption, phosphate fertilizer absorption efficiency and P intercropping advantage of maize‖faba bean, maize‖soybean, maize‖oil rape intercropping in Quzhou County, Hebei Province. Results showed that, maize‖faba beans LER was 1.24-1.31, maize‖rape LER was 1.20-1.24, and maize‖soybean LER was 1.11-1.15, which were larger than 1, had obvious intercropping advantage. P absorption of different intercropping system were maize‖faba bean > maize‖soybean > maize‖oil rape at three phosphorus levels, were higher than that of monocroped maize by 21.5%-40.2%, 13.3%-22.9%, respectively, and increased with the increasing of P fertilizer except of maize‖oil rape, but the increase rate reduced; P intercropping advantages of three intercropping systems were obvious, and reduced with the increased of P fertilizer except of maize‖soybean. All P fertilizer uptake efficiency of intercropping systems was lower than that of sole cropping maize except of maize‖soybean intercropping with 90 kg/hm2. This suggested that, utilizing soil hard dissolved phosphorus could be improved via the activation phosphorus ability of crops intercropped with maize, which was better when maize‖soybean or maize‖faba bean was intercropped, and 90 kg/hm2 was suitable P fertilizer application.