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character of soil moisture
相关语句
  土壤水分特征
     Through imitating the feature curve of soil moisture of different stand, we know the character of soil moisture of different stand, and through classifing to soil moisture, we calculate the effective value of soil moisture of different stand.
     运用先进的研究手段对不同林分的土壤的持水性能进行研究,通过对土壤水分特征曲线的拟合,掌握不同林分比水容量特征,并对不同林地的土壤水分进行分类,计算出不同林地土壤水分有效性的临界点,从而求出不同林地的有效水范围。
短句来源
  “character of soil moisture”译为未确定词的双语例句
     VERTICAL CHARACTER OF SOIL MOISTURE IN CHINA
     中国土壤湿度的垂直变化特征
短句来源
     Change Character of Soil Moisture on Soil Microbe and Cucumber Yield in Greenhouse
     温室黄瓜产量和土壤微生物随土壤水分的变化特征研究
短句来源
     The relationship between soil fluorine content or speciation variation of fluorine or adsorption forms in the soil and water system, and between variations of pH and Eh of soil solution and the unsaturated character of soil moisture along soil adsorbing fluorine from soil solution, are found by the writer.
     发现了亚粘土和粉质亚砂土的氟吸附量、形态变化和吸附模式变化之间的关系和变化规律,以及环境体系的pH和Eh与固液相物质交换量之间的关系。
短句来源
     The application researches of drip-irrigation on many trees indicated that it could improve tree growth and increase yields, at the same time it could greatly improve the water use efficiencies. The reasons of yields increased and water-saving are that leaf water potential, photosynthetic velocity, stomatal conductance and other physiological indexes, the character of soil moisture distributing and movement are affected by drip-irrigation.
     滴灌在多种树木上应用的研究表明 ,其可促进树木的生长和提高产量 ,同时可大幅度提高水分利用效率 ,而其增产和节水的原因在于对树叶水势、光合速率、气孔导度等生理指标以及土壤水分分布及运动特性的影响。
短句来源
     In the end, it was suggested that the researches of irrigation should be penetrated into the study on optimizing the system of irrigation, and for the study on the system of irrigation, the time of beginning irrigation, irrigation frequency and irrigation amount should be decided on the character of growth and the water status and the character of soil moisture, accordingly irrigation was arranged by the numbers.
     最后 ,建议对滴灌的研究应进一步深入到对优化灌溉制度的探索中 ,而对优化灌溉制度的研究应依据植物或树木的生长节律、生理特性与土壤的水分运动特征来确定灌溉的开始时间、灌溉频率及灌水定额 ,从而科学地制定灌溉计划。
短句来源
更多       
  相似匹配句对
     VERTICAL CHARACTER OF SOIL MOISTURE IN CHINA
     中国土壤湿度的垂直变化特征
短句来源
     Soil-moisture Sensors
     土壤水分传感器的研制
短句来源
     ②soil moisture effect on root spatial distribution character.
     二、土壤水分状况影响根系分布空间。
短句来源
     Research of Measurement of Moisture in Soil
     土壤水分测量的研究
短句来源
     SPECTRAL FEATURES OF SOIL MOISTURE
     土壤水分光谱特征研究
短句来源
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This paper analyses the great difference between thea ctual evapotranspiration and the theoretical one by means of wettness,evapotranspiration ratio,efficiency of utilization of rainfall water and the variation of values of characters of soil moisture in farmlands. The analytical results indicate that there is a positive correlation between water surface evaporation and soil evaporation as well as a negative correlation between water surface evaporation and crop evapotranspiration.Nevertheless,the...

This paper analyses the great difference between thea ctual evapotranspiration and the theoretical one by means of wettness,evapotranspiration ratio,efficiency of utilization of rainfall water and the variation of values of characters of soil moisture in farmlands. The analytical results indicate that there is a positive correlation between water surface evaporation and soil evaporation as well as a negative correlation between water surface evaporation and crop evapotranspiration.Nevertheless,the theoretical evapotranspiration mixes the both together,thus appearing to have the positive correlation plus the negative one.As a result,there occurs to have no correlation. This paper has summarized the two principal laws of soil moisture in rainfed lands in North China,i.e.water requirement by summer crops in the drought period in spring depends upon the moisture stored in soil in every other year, and the absorption of soil moisture by root systems is closely connected with rainfall water penetrating into soil i(?)he rainy season. The climatic zonification is based on the analytical equation of moisture physics, and at the same time, this paper deals with characters of each climatic zone and the developing orientation.

本文依湿润度、蒸散比、蒸发比、降水利用率等农田水分特征值的变化情况分析了实际蒸散与理论蒸散的巨大差异:水面蒸发与土壤蒸发成正相关,与作物蒸腾成反相关。理论蒸散把两者混在一起,“出现了正相关加反相关,结果变成不相关的现象”;归纳了北方旱地水分变化的两个主要规律:夏田作物春旱期需水依靠“隔年墒”和作物根系吸水深度大,同雨季入土水分保持了紧密的联系;根据国内外研究现状,用简化土壤蒸发方程处理的水分平衡产量预报方程作为区划工具,确定有作物代表性的气候指标,对我国北方的干湿气候进行了区划,分析了各气候区干旱表现形式,并对全面开发的途径进行了探讨。

According to the observed soil moisture information from the place located in southeast areas of Shanxi Province, and water balance methoa, we have studied the physical characters of soil moisture, the influence of crop to soil moisture, and field moisture cycle characters, The results suggest that the soil water deficit often exists in fields of the areas. From May to June, soil water deficit of bare-laud rises to the top of 232.8mm, and the...

According to the observed soil moisture information from the place located in southeast areas of Shanxi Province, and water balance methoa, we have studied the physical characters of soil moisture, the influence of crop to soil moisture, and field moisture cycle characters, The results suggest that the soil water deficit often exists in fields of the areas. From May to June, soil water deficit of bare-laud rises to the top of 232.8mm, and the bottom of 66.6mm appears during the period from August to September. By comparison, due to the influence of crop transpiration, both soil water deficit and soil dry layer of cultivated land are 15.1-40.4mm more and 20-70cm deeper respecsively than those of bare-land. Crops mainly planted in this area have less utilization ability to soil water. The water utilization ability of winter wheat can be the biggest of 26.2%-30.6%, and the depth of soil water utilization can deepen over 200cm soil layer. Spring corn and millet can only consume the soil water with the maximum ability and deepest layer of 13.4% and 0-50cm or 0-100cm respectively. After crop reaped, over 41% of available soil water in fields has not been used. So, increasing the soil water storage and improving the utilization ability of crops to soil water by efficient agrotechniques are one of the ways to increase the productivity in dryland farming.

根据农田土壤水分的定位观测资料、应用水分平衡法研究了晋东南地区主要作物对土壤水分的利用和农田土壤水分循环的特征。结果表明、该区农田土壤水分常处于亏缺状态,亏缺量比裸地多、土壤干旱层加深。作物对土壤水分的利用能力、收获时土壤有效水分剩余量因作物而异。冬小麦对土壤水分的利用量较多,用水层较深。春玉米、春谷子利用量较少,用水层也较浅。作物收获时,农田土壤中还有较多的有效水分未被利用,说明旱地土壤水分资源尚有一定的生产潜力,有待进一步开发。

Based on the characters of soil moisture distribution of both sprinkler and surface irrigation, the root growth and distribution of winter wheat were discussed. Then root growth and distribution models of winter wheat were presented for sprinkler and surface irrigation with different water quotas. At last the differences and the similarities of root density relative distribution on profile between sprinkler and surface irrigation were analyzed in detail. The results are useful for nicely establishing...

Based on the characters of soil moisture distribution of both sprinkler and surface irrigation, the root growth and distribution of winter wheat were discussed. Then root growth and distribution models of winter wheat were presented for sprinkler and surface irrigation with different water quotas. At last the differences and the similarities of root density relative distribution on profile between sprinkler and surface irrigation were analyzed in detail. The results are useful for nicely establishing root intake water model and modeling soil water movement.

根据喷灌水分在土壤中的分布特点 ,并参照地面常规灌水 ,研究了 2种灌水方式的不同灌水定额下冬小麦根系生长规律和分布状况 ,提出了相应的冬小麦根系生长和分布的数学模型 ,较深入地分析了在喷灌和地面灌条件下根质量密度剖面相对分布的异同 ,从而为更加准确地建立根系吸水模型 ,模拟土壤水分运移规律提供参考

 
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