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chemical nitrogen
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  无机氮
     From August to October, nitrate content in forage was lower than 0.25% when applied 45000 kg/hm~2 goat manure combined with 529.5 kg/hm~2 chemical nitrogen or 225 000 kg/hm~2 goat manure combined with 259.5 kg/hm~2 chemical nitrogen. This combination was the best one and safe for animals.
     施用有机肥羊粪 4 5 0 0 0kg/hm2 +无机氮 5 2 9 5kg/hm2和施用有机肥 2 2 5 0 0kg/hm2 +无机氮 2 5 9 5kg/hm2 时 ,8- 10月 3个刈次植株硝酸盐含量均低于 0 2 5 % ,饲喂家畜无硝酸盐中毒的风险 ,为试验中最佳的施肥方案。
短句来源
     Effects of adding chemical nitrogen and phosphorus on mineralization of soil organic nitrogen.
     添加无机氮磷与有机肥对土壤有机氮矿化的影响
短句来源
  氮化肥
     According to the actual conditions of this area it is appropriate that the amount of applied chemical nitrogen is between 24~28 kg/667 m~2.
     根据本地区实际情况,氮化肥用量宜控制在24~28 kg/667 m2。
短句来源
     STUDY ON REDUCING CHEMICAL NITROGEN FERTILIZERA PPLIC ATION IN RICE-GREEN MANURE(BROADBEAN) ROTATION
     水稻-绿肥(蚕豆)轮作减少氮化肥用量研究
短句来源
  “chemical nitrogen”译为未确定词的双语例句
     Experimental results showed that reducing chemical nitrogen fertilizer application could obviously improve the yield and quality of watermelon under protected culture,and the amount of applied pure nitrogen=15-17 kg/666.7 m2 and N∶P2O5∶K2O=1∶0.5-0.7∶0.7-0.8 were appropriate.
     研究结果表明,氮肥减量施用对设施栽培西瓜产量和品质的提升具有明显作用,一般西瓜纯氮用量和N∶P2O5∶K2O比例分别控制在15-17 kg/666.7 m2和1∶0.5-0.7∶0.7-0.8较为适宜;
短句来源
     According to the present situation of excessively applying nitrogen fertilizer to cauliflower field in Chongming County,the special mixed fertilizer(N∶P∶K=18∶10∶7) was developed and popularized in order to reduce amount of chemical nitrogen fertilizer applied. The experiment in 667 m~2 cauliflower field was carried out at the doses of 28.1,24.6 and 22.3 kg as well as 36.5 kg(conventional application,CK).
     针对本地区目前花椰菜氮肥用量偏高的现状,开发、推广自行复配加工的35%专用配方肥(N∶P∶K=18∶10∶7),以减少氮肥用量,并对667 m2花椰菜施28.1 kg、24.6 kg、22.3 kg和36.5 kg(CK)4种剂量试验研究。
短句来源
     Radish, FW: y = 31.07 +3190.47x - 8320.60x2, DW: y = 3.85 +228.28x - 591.81 x2.The yield of four kinds of vegetables increased with increasing of chemical nitrogen application rate.
     =31.07+3190.47x-8320.60x~2,干重:(?) =3.85+228.28x-591.8lx~2。
短句来源
     The results were showed as follows:dry matter yield and total nitrogen accumulation in hybrid Pennisetum reached the highest and dry matter production efficiency by nitrogen was relatively low as fertilization combination of 67 500 kg/hm~2 manure plus 270.0 kg/hm~2 chemical nitrogen was applied;
     结果表明:施用有机肥67 500 kg/hm2+无机氮肥(纯氮)270.0 kg/hm2处理,杂交狼尾草干物质产量和氮素积累总量均达到最大值,氮素干物质生产效率较低,第3、第4、第5刈次植株硝酸盐含量均高于0.25%,单独饲喂家畜存在硝酸盐中毒的潜在危险;
短句来源
     2. The total input to soil nitrogen pools was 235×104 tons, among which 57.0% came from chemical nitrogen fertilizer, 36.6% from organic manure.
     黄土高原土壤氮库的流入量为235×10~4t,其中化学氮肥流入量占总流入量57.0%,有机肥占36.6%;
短句来源
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  相似匹配句对
     Nitrogen Oxides Chemical Sensors
     氮氧化物化学传感器
短句来源
     THE CHEMICAL NATURE OF SOIL ORGANIC NITROGEN
     土壤有机氮的化学本性
     Sumitomo Chemical
     住友化学公司
短句来源
     Chemical Sensors
     化学量传感器——第五讲 生物传感器 二 酶传感器(一)
短句来源
     Nitrogen and Magnetism
     氮元素与磁性
短句来源
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  chemical nitrogen
Uptake of 15N from cyanobacteria by rice was studied in a greenhouse pots experiment without chemical nitrogen addition.
      
Adding nutrients and chemical nitrogen did not change the severity of chlorosis or improve the growth of the plant.
      
Bradyrhizobium technology: a promising substitute for chemical nitrogen fertilizer in Bangladesh agriculture
      
The doubling of chemical nitrogen dose significantly increased the yield and nitrogen uptake.
      
Inoculation was superior to chemical nitrogen fertilization in all parameters of importance to market-oriented farmers.
      
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An investigation was made about the investment benefit and effect、level of energy consumption、energy consumption in construction、and energy transformation efficiency and its influential factors of Yangzhong county farmland ecosystem located in the centre of Yantze river delta in the south of Jiangsu Province. This county is densely populated (1138 per Km~2) with a high grain yield but a low economic benefit and effect of farmland investment. However, a high grain yield often followed by a high energy consumption...

An investigation was made about the investment benefit and effect、level of energy consumption、energy consumption in construction、and energy transformation efficiency and its influential factors of Yangzhong county farmland ecosystem located in the centre of Yantze river delta in the south of Jiangsu Province. This county is densely populated (1138 per Km~2) with a high grain yield but a low economic benefit and effect of farmland investment. However, a high grain yield often followed by a high energy consumption and a low economic benefit and effect is an universal phenomenon in this area. It was found that the commercial inorganic energy input in farmland energy consumption great increased especially the chemical nitrogen fertilizers overfertilized is the main problem in densely populated farmland ecosystem of lower reach of Yantze river. Mathematical models of farmland energy input and output transformation was proposed out. According to the linear programming for crop overall arrangement, the agricultural production costs may decrease 10%, pure profits increase 103.9%, economize on labour force 14.9%, and on chemical fertilizers 39.8% in Yangzhong county. This study is an application of the principles of systems pedoloy proposed out by the author based on the dissipative structure theory to the soil utilization.

本文根据耗散结构理论指出农田生态系是一个有完整意义的生态经济系统。生态经济系是生态与经济要素融合形成的独立研究客体,研究的是系统中物质、能量和价值循环增值的规律。研究的根据是物质、能量和价值运动的信息,系统中的物流和能流,是通过价值流来体现的。文中以苏南扬中县为例,讨论了长江三角洲农田的投资效益、能耗水平、能耗构成转换效率及其影响因素,提出了适合该地区现阶段的农田能量投入产出关系的数学模型,并讨论了能量转换效率降低的原因和节能稳产的途径。

The four years experiments indicated that organic and chemical nitrogen fertilizers and powdered rock phosphate which were applied to the lower-medium fertile field in which the preceding crop was winter wheat in Yellow River, Huaihe River and Haihe River basin, not only the yield of soybean increased significantly but the available nutrition in the soil increased also around root system. There were still 61.3% of available nitrogen and 89.4% of available phosphate remained in the soil for the following...

The four years experiments indicated that organic and chemical nitrogen fertilizers and powdered rock phosphate which were applied to the lower-medium fertile field in which the preceding crop was winter wheat in Yellow River, Huaihe River and Haihe River basin, not only the yield of soybean increased significantly but the available nutrition in the soil increased also around root system. There were still 61.3% of available nitrogen and 89.4% of available phosphate remained in the soil for the following crop. Phosphate fertilizer was beneficial to nitrogen fixation by root nodules, whpse development was not always to correlete negatively with nitrogen supply . The supply level of nitrogen fertilizer at which the inhibition to nitrogen fixation basically disappeared before the peak of nitrogen fixation was beneficial to total increment of nitrogen fixation. Soybean absorbed nitrogen mainly from soil and fertilizer applied before flowering, and from fixed nitrogen after that time. In the former case the nitrogen absorbed mostly used for vegetative growth and the latter for reproductive organs.

经过四年来的试验证明:黄淮海中低产土壤种植夏大豆,在前茬冬小麦混施有机无机肥料和磷矿粉,不仅豆作增产显著,还能明显增加豆株根圈有效营养,除自身需求还可残留有效氮61.3%和有效磷89.4%供后作利用;磷肥有利于结瘤固氮,氮肥对结瘤固氮也不都是负相关,抑制作用在固氮高峰期前基本消失的施氮水平,对提高总固氮量有利;大豆在开花前吸收土壤氮和肥料氮为主,开花后吸收空气氮为主;土壤氮和肥料氮多组成营养器官,空气氮多进入结实器官。

With a regression design this study deals with the quantitative technical measures-irrigation frequency and dates, weight of seeds sown per hectare, ( rate of seeding ) , application of manure and chemical nitrogen and phosphorus fertilizers-in relation to the yield of spring wheat grown in irrigated fields in the Yanbei Prefecture of Shanxi Province and financial income. Through multi-point test, various mathematical models of ecosystems of wheat fields have been obtained. After application on a small...

With a regression design this study deals with the quantitative technical measures-irrigation frequency and dates, weight of seeds sown per hectare, ( rate of seeding ) , application of manure and chemical nitrogen and phosphorus fertilizers-in relation to the yield of spring wheat grown in irrigated fields in the Yanbei Prefecture of Shanxi Province and financial income. Through multi-point test, various mathematical models of ecosystems of wheat fields have been obtained. After application on a small scale and comparison in 1986 and 1987, the optimization plans proved to be feasible and profitable.

本研究用回归设计方法,探讨了山西省雁北地区水地春小麦可定量技术措施——灌水次数和时期、播种量、农家肥及氮磷化肥与春小麦产量和经济收入的关系.经1985年多点试验,获得了不同麦田生态型的数学模型.优选方案经1986和1987年的示范对比和小面积推广,证明是切实可行的,获得一定经济效益.

 
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