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利用海水资源直接农业灌溉的研究
Study on the irrigation systems in agriculture by seawater
查看参考文献10篇
文摘
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2000一2002年在半干旱的山东莱州地区进行了海水直接灌溉鲁梅克斯(Rumex paticntia xR.TianschanicuscvRumex K-1)、油葵(Helianthus annuus L."G101B")、菊等耐盐植物的田间小区试验和室内模拟试验,结果表明:①试验期总降雨量212.9mm,灌溉定额每年为巧oom,·hm~(-2),海淡水比例0:1、1:9、1:3、1:1混合灌溉后的耕层土壤(0、40cm)盐分没有模拟表明,降雨量为soomm,即使用1:1的处理,lm土体脱盐率仍可达17%左右,表明海水适量灌溉可以缓解滨海盐土的土壤盐渍化;②海水灌溉大大减缓滨海盐土水分蒸发,1:1处理灌溉30d后土壤水吸力仅为0:l(全淡水)处理的50%左右;③1:1海淡水灌溉处理的鲁梅克斯、油葵、菊芋产量与全淡水灌溉的没有显著差异,比不灌溉的增产1倍以上。 |
其他语种文摘
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From 2000 to 2002,the field experiments and indoor simulating experiments were carried out in Laizhou, Shandong Province to study the effect of seawater irrigation on the growth of Rumex plant and sunflower and Helianthus tuberosus L. The results were as follows:(l) In the condition of the total rainfalls and irrigation being 212.9mm and 1500m3'hnT2 respectively, the soil salinity content in 0-40cm soil layer was rarely affected by 0:1,1:9,1:3 and 1:1 proportions of seawater and freshwater.And the indoor simulating experiments indicated that the rate of desalinization in 1m soil layer reached 17% after irrigated with 1:1 proportion of seawater and freshwater.These results indicated that soil salinization could be controlled by the proper proportion of seawater irrigation in semiarid region. (2)The soil moisture evaporation in semiarid region was lowered greatly due to seawater irrigation.Soil water suction in 30d soil profile irrigated with 1:1 proportion of seawater and freshwater was only a half of that in 0:1 (total freshwater). (3)The biomass yields of Rumex plant and sunflower and Helianthus tuberosus L. irrigated with 1;1 proportion of seawater and freshwater had no differences from that with total of freshwater, and the biomass yields increased by 100% in contrast to non-irrigated. |
来源
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自然资源学报
,2003,18(4):423-429 【核心库】
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关键词
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海水资源
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农业
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灌溉
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经济作物
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地址
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1.
南京农业大学资源与环境学院, 江苏, 南京, 210095
2.
南京市科技局, 江苏, 南京, 210097
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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1000-3037 |
基金
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国家863计划
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国家863计划
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文献收藏号
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CSCD:1325323
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