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应用生态学报 ›› 1998, Vol. 9 ›› Issue (1): 37-40.

• 研究论文 • 上一篇    下一篇

农业生态系统养分循环再利用的作物产量增益

张璐, 廉鸿志, 宇万太, 殷秀岩, 沈善敏   

  1. 中国科学院沈阳应用生态研究所, 沈阳 110015
  • 收稿日期:1997-09-02 修回日期:1997-10-18 出版日期:1998-01-25 发布日期:1998-01-25
  • 基金资助:

    国家“九五”科技攻关项目(96-004-04-06)

Yield-increase efficiency of using recycled nutrients in agro-ecosystems

Zhang Lu, Lian Hongzhi, Yu Wantai, Yin Xiuyan, Shen Shanmin   

  1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015
  • Received:1997-09-02 Revised:1997-10-18 Online:1998-01-25 Published:1998-01-25

摘要: 在辽西褐土上进行8年的田间试验结果表明,在不同化肥基础上,每年以60%的收获产品堆腐后循环回田,平均分别可获得29.6%(不施化肥)、15.2%(N肥)、11.1%(NP肥)和9.2%(NPK肥)的增产率,或分别每年增产粮食1.33、0.99、0.79、0.64t·hm-2.养分循环再利用的作物增产效益在试验的8年中有着逐年增长趋势,表明以堆肥形式循环回田养分对作物的增产作用存在着明显的残效叠加效应,因此,只有通过长期田间试验方能准确评估农业系统中养分循环再利用的作物产量增益.

关键词: 农业生态系统, 养分循环, 作物产量, 棉花, 区域试验, 主产棉区, GGE双标图, 棉纤维品质, 生态区划分

Abstract: The results from an eight years field experiment on cinnamon soil in western Liaoning indicatethat the recycled nutrients in compost made by 60% of the harvested products from the Plotsapplied with different fertilizers every year could increase crop yields by 29.6 % (no fertilizer),15.2 % (N), 11.1 % (NP) and 9.2 % (NPK)respectively, or give an averaxe increase of 1.33,0.99, 0.79 and 0.64 t·hm-2 respectively. There was a trend that the effect of recycled nutrients in compost on crop ytelds was significantly increased during the period of experiment, implying the existence of accumulative residual effect from recycled comopt. Therefoe, a real effectiveness of recycled nutrients on crop yields could only be estimated by a long term field experiment.

Key words: Agro-ecosystem, Nutrients cycle, Crop yield, cotton fiber quality, GGE biplot, regional crop trial, ecological regiona-lization, cotton (Gossypium hirsutum), major cotton-producing area