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physical character of soil
相关语句
  土壤物理性状
     (2) spraying no-tillage regulator improved the physical character of soil obviously, bulk density was lower than the period before sowing;
     (2)喷施土壤调理剂明显改善土壤物理性状,容重低于播前;
短句来源
     But the low benefit of mono- cereal cropping structure is their main weak point which are unfavourable for providing plentiful agricultural products and improving the physical character of soil.
     但生产内容单调,多数为纯粮型种植结构,经济效益不高,不利丰富社会产品和改善土壤物理性状
短句来源
  “physical character of soil”译为未确定词的双语例句
     The study made systematically on rice-duck-fish compounded ecosystem from the aspects of the discharge of CH4 in paddy-field, the physical character of soil condition of paddy-field, the main chemical property of water, the growth properties of paddy plants and so on, and at the same time made a research and analysis on the emergence and development of paddy's main diseases and insect pests in the compounded ecosystem and established the relevant mathematical model.
     本研究从稻田甲烷排放、水稻土壤环境理化性质、水的主要化学性状、水稻植株生长性状等方面对稻-鸭-鱼复合生态系统进行了系统的研究,同时对该复合生态系统中的水稻主要病虫害的发生、发展进行了调查分析,并建立了相应的数学模型。 研究结果如下:
短句来源
     Not only has it super fertility providing plant nutrition, but it can ameliorate physical character of soil in order to provide permanent fertility, and does not pollute circumstance.
     它既有很高的肥效为植物提供丰富的营养,又能改善土壤的理化性状以提供持久的肥力,同时又不污染环境,标本兼治,生产真正的“无公害”农产品,使农业回归自然。
短句来源
     the inner relationship between elements chemic and physical character of soil and pollution source was found out through the correlation analyse.
     通过相关性研究确立了各污染元素含量间、污染元素与污染源间、元素各形态间的内在联系。
短句来源
  相似匹配句对
     Physical Education Centering on Character
     体育素质教学应以人为本
短句来源
     Building up Character in Physical Education
     在体育教学中学生良好个性的培养
短句来源
     Train of Physical Education and Will Character
     论学校体育对学生意志品质的影响
短句来源
     On the Spirit and Moral Character of Physical Education
     论体育精神和体育品格
短句来源
     Competition is the basic character of physical exercise.
     竞赛 ,是体育运动的基本特征。
短句来源
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The throughout 4-year site-oriented cropping system trial was composed of 9 crops with 9 different cropping patterns,forming biennial multiple cropping and rotation systems of 6 groups.The experiment showed that the local cropping system played important role in the production of cereal,forage,oil,organic manure,and protein.But the low benefit of mono- cereal cropping structure is their main weak point which are unfavourable for providing plentiful agricultural products and improving the physical character...

The throughout 4-year site-oriented cropping system trial was composed of 9 crops with 9 different cropping patterns,forming biennial multiple cropping and rotation systems of 6 groups.The experiment showed that the local cropping system played important role in the production of cereal,forage,oil,organic manure,and protein.But the low benefit of mono- cereal cropping structure is their main weak point which are unfavourable for providing plentiful agricultural products and improving the physical character of soil.It has been found that social economic,and ecological benefit and effect could be increased significantly by introducing spring and autumn upland crops into the cropping system,combining cereal crops with forage and cash crops,and practicing the biennial multiple cropping and rotation systems of“3 rice crops and 3 upland crops”and arranging them rationally.In addition,using computer and simulation technique,the optimum cropping patterns structure for small-scale farmer was offered in this paper.

以九种作物、九种复种方式组成六组二年一轮的复种轮作处理,经过四年的定位试验,初步明确,当地现行主要种植制度在生产粮食、饲料、油料、蛋白质过程中部有特定的地位和作用,应当全面发展。但生产内容单调,多数为纯粮型种植结构,经济效益不高,不利丰富社会产品和改善土壤物理性状。研究结果表明,通过春秋季引种旱作物,实行粮-饲、粮-肥、粮-经结合的“三旱三水”两年六熟复种轮作方式,能够明显提高经济、社会及生态效益。文中还就小型农户最佳种植结构,通过电算摸拟进行了分析。

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...

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。

In this paper, physical characters of soil such as compactness , volumeweight,total porosity and moisture content were studied from ten afforestation areas of mani sightseeing areas in the DitanPark , Beijing,Also,its chemical characters of organic matter, total nitrogen, rapidly available nitrogen, total phosphorous, rapidly available phosphorous ,pH and total salt were dealt with,Relationship between soil barrier factors and plant growing were studied in these areas, which showed...

In this paper, physical characters of soil such as compactness , volumeweight,total porosity and moisture content were studied from ten afforestation areas of mani sightseeing areas in the DitanPark , Beijing,Also,its chemical characters of organic matter, total nitrogen, rapidly available nitrogen, total phosphorous, rapidly available phosphorous ,pH and total salt were dealt with,Relationship between soil barrier factors and plant growing were studied in these areas, which showed that some unfavorably physical and chemical characters affect normal growing of plants.This study provides theoretical basis for improvement of soil and maintenance of trees in the DitanPark.

本文研究了地坛公园10块主要游览绿化带土壤坚实度、容重、总孔隙度、含水量等物理性质。全氮、速效氮、全磷、速效磷、速效钾、土壤pH值和含盐量等化学性质。探索了地坛公园主要游览绿化区内土壤障碍因素与地上植物长势之间的关系,证实了某些土壤不良物理性状和化学性质对植物正常生长的不良影响,为地坛公园土壤的改良与树木养护提供了理论根据。

 
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