专业英语的翻译,急急急急急急!!!!!!!!!!!!!!

通过田间试验,探求轻度盐渍化地区不同水氮组合对玉米光合特性及其与产量的关系,寻求适合本地区玉米种植的水氮配比,达到提高作物产量与防治次生盐渍化的目的。在轻度盐分土壤设置了10种水氮处理 ,对玉米的叶片光合特性和产量进行了研究。结果表明:在轻度盐渍化土壤上,适度的节水节氮不会降低玉米的光合速率和叶片WUE,对产量影响不显著。当灌水量达到2250 m3/hm2,施氮量为225kg/ hm2时,玉米的光合速率、叶片WUE和产量显著增加,继续增加灌水和施氮量玉米的光合速率、叶片WUE和产量不会明显的增加。通径分析表明,轻度盐分土壤上灌溉水量是决定玉米光合速率下降是气孔因素、非气孔因素还是共同限制的主要因素。综合分析,处理T5的水氮比当地水平节水30%节氮30.8%,光合速率和叶片WUE分别比T9提高4.83%和3.76%,产量无差异,是轻度盐分土壤上玉米种植较合理的水氮配比。成果可为灌区及相近地区水肥管理提供参照。
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A field experiment to explore different combinations of mild saline water and nitrogen regional relations on photosynthetic characteristics and yield of maize, corn planting in the region to seek suitable water nitrogen ratio, to improve crop yields and prevention of secondary salinization purposes. In mild salt set 10 kinds of soil water and nitrogen treatments on leaf photosynthetic characteristics and yield of maize were studied. The results showed that: soil salinization in mild, moderate water conservation section does not reduce nitrogen and photosynthetic rate of maize leaves WUE, no significant effect on yield. When irrigation reached 2250 m3/hm2, nitrogen rate was 225kg / hm2, the photosynthetic rate of maize leaf WUE and yield significantly increased photosynthetic rates continue to increase irrigation and nitrogen fertilizer corn leaf WUE and yield is not obvious increased. Path analysis showed mild upper soil salinity irrigation water is to determine photosynthetic rate decreased stomatal factors maize, the main factor is the common factor in non-stomatal limitations. Comprehensive analysis of treated water saving T5 section nitrogen nitrogen 30.8% to 30% than the local level, photosynthetic rate and leaf WUE T9 respectively 4.83% and 3.76% raise, no difference in yield, soil salinity is a mild corn planting more reasonable water and nitrogen ratio. Results can provide a reference for the irrigated areas and similar water and fertilizer management.。希望你满意
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第1个回答  2013-12-05
Through field test, the combination of different water and nitrogen to mild salinization area on Photosynthetic Characteristics of maize and its relationship with yield, water and nitrogen ratio to seek suitable for planting in the region to improve the yield of corn, and prevention of secondary salinization crop purpose. 10 kinds of water and nitrogen treatments in the mild salinity soil, leaf on Photosynthetic Characteristics and yield of maize were studied. The results show that: in the mild saline soil, saving water and nitrogen would not moderate decrease Maize Photosynthetic rate and leaf WUE, no significant effect on yield. When the irrigation amount reached 2250 m3/hm2, nitrogen application is 225kg/ Hm2, the photosynthesis, leaf WUE and yield increased significantly, continue to increase irrigation and nitrogen Maize Photosynthetic rate, leaf WUE and yield was not increased significantly. Path analysis showed that mild salinity soil, irrigation water is Maize Photosynthetic rate, stomatal factors is non stomatal factors or common constraints a major factor. Comprehensive analysis, water and nitrogen treatment T5 than the local level of water saving 30% n 30.8%, photosynthetic rate and leaf WUE were higher than that of T9 4.83% and 3.76%, no differences in yield, water and nitrogen ratio is mild salinity soil maize planting more reasonable. Results can provide a reference for the similar area irrigation and fertilizer and water management.
第2个回答  2013-12-05
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