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optimum sowing time
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  最佳播期
     Study on optimum sowing Time for High-yield Cultivation of plastic-film Corn in north China
     对北方旱地覆膜玉米高产栽培最佳播期的研究
短句来源
     The Optimum Sowing Time for Plastic-film Corn and the Use of the Two Theories
     地膜玉米的最佳播期及其“两个学说”的应用
短句来源
     The optimum sowing time ranged from the 15th to 25th of June and the optimum density was 7 000 -8 000 seedlings per mu.
     最佳播期6月15~25日,最佳密度亩保苗7~8千株。
短句来源
     The optimum sowing time is between 30. Sept. to 10.Oct.
     试验认为,甜菜在海南冬种的最佳播期是9 月30 日~10 月10 日,最佳收获期是3 月20 日前后。
短句来源
     The results of experiments and investigations in many years showed that in the semi damp soil, the output had been increased by 69 2% when the former is used to guide the optimum sowing time for the plastic film corn, and in the semi arid area and the yield of corn increased by 60 0% when the latter was used, for, when used, the output will increase only by 15 7% and dropped by 14 4% less than the latter.
     经多年的试验和调查表明 ,在半湿润生态类型区 ,应用“增温说”指导地膜玉米最佳播期增产 6 9.2 % ; 在半干旱地区 ,应用“调水说”指导地膜玉米最佳播期增产6 0 .0 % ,而应用“增温说”播期只增产 15 .7% ,比“调水说”播期减产 14 .4 %。
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  “optimum sowing time”译为未确定词的双语例句
     EXPERIMENT OF OPTIMUM SOWING TIME OF CORN AFTER WHEAT
     麦后玉米最适播期试验
短句来源
     This report described the optimum sowing time of corn after wheat. The time was from 20th of April to 10th of May, which was demonstrated by climate principle.
     经过连续两年的试验,找出了麦后玉米的最适播期为4月20月至5月10日,并用气候规律进行了论证。
短句来源
     The sowing time has no effect to the yield and growth, But optimum sowing time, covering the plastic-sheet early and 2 300plant/667 m2 Should be executed in order to earn high yield of taro.
     播种期对生长发育和产量无影响。 从综合因素考虑,要使夏芋丰产,应适时播种,及早覆盖地膜,密度为2300株/667m2。
短句来源
     CONCLUSION: There are marked instruction for deciding optimum sowing time of Rutaceae medicinal plants.
     结论:对芸香科植物确定合适的播种期具有指导意义。
短句来源
     This study reported the effects of different temperature on the medicinal plant seed germination and dormancy of Ranumculaceae. The temperature range,optimum temperature,germination speed and germination percentage for different species seed were raised,That has a instructive significance for keeping optimum temperature of gemination of different seed of specics and deciding optimum sowing time in the production of Chinese herbal medicine.
     本文报导了不同温度对毛莨科药用植物种子萌发和休眠的影响 ,提出了不同种的种子发芽的温度范围、发芽适温、发芽所需天数及发芽率 ,对于中药材生产中掌握不同种的种子发芽适温 ,确定合适的播种期具有指导意义。
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  相似匹配句对
     Study on Optimum Sowing Date of "Jiangxiangru"
     江香薷的最佳播种期研究
短句来源
     STUDY ON AMOUNT OF OPTIMUM SOWING NORM OF VICIA VILIOSA
     毛苕子最适播种量试验研究
短句来源
     EXPERIMENT OF OPTIMUM SOWING TIME OF CORN AFTER WHEAT
     麦后玉米最适播期试验
短句来源
     Sowing Hope
     播种希望——清徐县农民孙春有投资兴学记
短句来源
     and its price is optimum.
     材料来源广泛.价格适中,容易推广使用;
短句来源
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  optimum sowing time
The method for determining the optimum sowing time is to measure the depth of soil thawing, accumulated temperature above 5°C both at 5 cm of the depth of of soil and in atmosphere.
      


The types and characteristics of growth stage variation of each varietyon sowing time test were studied in 1973-1982, at Changsha. The results wereanalysed useing statistical method of system cluster analysis and summarizedas follows. 1. The growth stage of 89 varieties tested may be classified into thirteentypes) four types belong to early varieties with the growth duration from 105to 125 days; seven types belong to medium varietis changing from 130 to 150days; and two types belong to late varieties varying...

The types and characteristics of growth stage variation of each varietyon sowing time test were studied in 1973-1982, at Changsha. The results wereanalysed useing statistical method of system cluster analysis and summarizedas follows. 1. The growth stage of 89 varieties tested may be classified into thirteentypes) four types belong to early varieties with the growth duration from 105to 125 days; seven types belong to medium varietis changing from 130 to 150days; and two types belong to late varieties varying from 150 to 170 days. 2. The tendency of growth stage (y) variation of each variety vary withthe difference of sowing time(x). Late varieties show linear modle (y = a+bx).The growth duration is shortened by 5-6 days with every 10 days delay insowing from late March to late July. Early and medium varieties show quadra-tic modle (y=a+b_1x+b_2x~2). The growth duration is shortened with the sowingtime advanceing from late March to mid-june, but prolonged with the sowingtime advanceing from mid-june on Hence, the growth stage of each variety sowedin different season, the optimum sowing time for early and medium varietiesand the latest sowing time for late varieties can be estimated. 3. The relative variation range of the growth duration of each variety ofdifference ecological type is continuous with different sowing season in thefollowing sequence : late varieties more than 60%, early varieties 40-60%, andmedium varieties less than 40% . The relative variation range can be applied forclassifying temperatural and photoperidic reaction types of varieties in naturalconditions.

本文提出了水稻品种生育期变化类型的划分方法,分析了长沙地区1973-1982年自然条件下分期播种各供试品种生育期聚类的结果,和不同熟期水稻品种齐穗日数依播期而变化的直线型和曲线型模型,以及品种生育期变化的趋势和稳定性。还讨论了系统聚类分析用于品种生育期分类的可行性等有关问题。

This paper showed studies on cultivated technigues of Vicia sativa in the high and cold regions,including sowing time,seed rates,row spacing and amount of phosphorus application.Based on analysing and contrasting,the observational results of different trcatments of each factor in phenopnase,regular pattern of growth,structure of community,ratio between stems and leaves,forage yield and so on,a series of reasonable methods planted vivia Sativa on high and cold regions is achieved.Resuets showed that...

This paper showed studies on cultivated technigues of Vicia sativa in the high and cold regions,including sowing time,seed rates,row spacing and amount of phosphorus application.Based on analysing and contrasting,the observational results of different trcatments of each factor in phenopnase,regular pattern of growth,structure of community,ratio between stems and leaves,forage yield and so on,a series of reasonable methods planted vivia Sativa on high and cold regions is achieved.Resuets showed that in He Zuo areas where is southern part of Gansu province with elevation of 2916 metres,optimum Sowing time is from april 25 to may 10,seed rates is 75kg/ha,row spacing is 30cm,amount of phosphorus application is 150kg/ha.

本文从播期、播量、条播行距和施磷量四个主要技术环节上对春箭舌豌豆在高寒阴湿地区的栽培技术进行了较为系统的研究。通过对各供试因素及其处理水平在物候期、生育节律、草层结构、茎叶比和产草量等方面的观测结果进行综合分析对比表明:在海拔2916米的合作地区,春箭舌豌豆的适宜播期应为4月25日~5月10日,播量为75公斤/公顷,行距为30厘米,施磷量为150公斤/公顷。

A series of experiment for the high yield of wheat production with minimum or no-tillage was carried out in the harvested rice field in the Huai Rive rwgions of Jiangsu from 1983 to 1987. The results indicatcd that the wheat seedling with minimum or no-tillagc grows rapidly at early stage, most of the root scattered in the surface soil (0-7cm), senescence often appeared during the middle to late stage, the formation or the high yield population were summarized quantitatively as follows: production has to synchronize...

A series of experiment for the high yield of wheat production with minimum or no-tillage was carried out in the harvested rice field in the Huai Rive rwgions of Jiangsu from 1983 to 1987. The results indicatcd that the wheat seedling with minimum or no-tillagc grows rapidly at early stage, most of the root scattered in the surface soil (0-7cm), senescence often appeared during the middle to late stage, the formation or the high yield population were summarized quantitatively as follows: production has to synchronize the wheat physiological stages and the growing season, the tiller numbers and the developmental stagc, and LAI and dry material and the devolopment. In order to realize the models, the corresponding techniques included, (1) sowing method of minimum or no-tillage and the related techniques are established in accordance with the prcceding crop and soil moisture during the optimum sowing time; (2) the quantity of presowing and seedling fertilizer are determined based on the soil productivity, soil-supply and growing-demanding, and the quantity and applying time for the ear-developmant fertilizer are determincd based on growing situation; (3) the lodging during the late stage and weeds are controlled by the agronomic technique and the chemicals.

1983-1987年在江苏淮南地区稻板茬上进行一系列试验表明:少免耕小麦具有早发、根量较多集于表土、中后期易脱力早衰等特性。其高产群体的形成可从下列方面数量化地归纳成生长模式:小麦生理年龄与季节进程优化同步;茎蘖动态与生育进程优化同步;LAI及干物量依生育进程合理发展。模式的调控,首先应在最佳播种期内,据茬口、墒情优选少免耕播种方式与配套播种程序;其次据供肥需肥特性,因土确定基、追肥数量,按苗类决定拔节孕穗肥施用时期与数量;并还以化学措施与农艺结合的方法控制草害与小麦倒伏。

 
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