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当前位置: 首页 > 文章 > 分根区交替灌溉对马铃薯水氮利用效率的影响 农业工程学报 2009,25 (6) 100-103
Position: Home > Articles > Effect of alternate partial root-zone irrigation on nitrogen and water use efficiency of potato Transactions of the Chinese Society of Agricultural Engineering 2009,25 (6) 100-103

分根区交替灌溉对马铃薯水氮利用效率的影响

作  者：
李平;齐学斌;樊向阳;吴海卿;乔冬梅;樊涛;赵志娟;黄仲冬;朱东海
单  位：
中国农业科学院农田灌溉研究所
关键词：
氮素吸收;氮素残留;分根区交替灌溉;地下滴灌;沟灌;马铃薯
摘  要：
分根区交替灌溉已被证实是一种有效节水灌溉技术同时保持作物产量,但有关分根区交替灌溉提高作物氮素利用效率、降低对水土环境的影响机理还不是很清楚。为了探明地下滴灌条件下充分灌溉及分根区交替灌溉(APRI)对马铃薯水氮利用效率的影响,通过田间小区试验,对各处理马铃薯全生育期灌水量、植株体氮素残留、土壤氮素残留及水氮利用效率进行了比较分析。研究结果表明:收获后,APRI处理(E、I、K)与充分灌水处理产量(F、J、L)差异不大,但APRI处理灌溉水利用效率显著高于充分灌水处理(p=0.05);充分灌水处理不同土层(0～30cm和30～60cm)土壤中残留硝态氮、矿物质氮较APRI处理高;APRI处理(I、K)作物氮利用效率及农田氮利用效率显著高于充分灌水处理(J、L)(p=0.05)。因此,APRI处理不仅能够显著提高作物的水分利用效率,而且还能显著提高土壤矿质氮的活性,有利于作物对土壤氮素的吸收利用。
译  名：
Effect of alternate partial root-zone irrigation on nitrogen and water use efficiency of potato
作  者：
Li Ping,Qi Xuebin,Fan Xiangyang,Wu Haiqinq,Qiao Dongmei,Fan Tao, Zhao Zhijuan,Huang Zhongdong,Zhu Donghai (Farmland Irrigation Research Institute,The Chinese Academy of Agricultural Sciences,Xinxiang 453003,China)
关键词：
nitrogen uptake,residual nitrogen,alternate partial root-zone irrigation,subsurface drip irrigation,furrow irrigation,potato
摘  要：
Alternate partial root-zone irrigation(APRI)has been established as an efficient technology to save water,but its effectiveness in saving nutrient and reducing the impact on soil and water environment was less understood.In order to study the effect of full irrigation and alternate partial root-zone irrigation(APRI)on water and nitrogen use efficiency of potato,a field experiment was conducted.The irrigation amount of the whole growth stage of potato,residual nitrogen in plant,residual nitrogen in soil,water and nitrogen use efficiency with different treatments were analyzed.The results showed that after the harvest,the yields were no significant differences between APRI and full irrigation.But the values of irrigation water use efficiency with APRI treatments were higher than that with full irrigation treatments (p=0.05).The residual nitrate nitrogen and mineral nitrogen of soil in different soil layers with full irrigation treatments were higher than those with APRI treatments.The values of nitrogen use efficiency in crop and farmland of APRI(I,K)were significantly higher than those of full irrigation(J,L)(p=0.05).Therefore,APRI treatments can not only improve the water use efficiency of crops significantly,but also improve mineral nitrogen availability,which are beneficial to crop uptaking and utilizing nitrogen from soil.

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