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grazed intensity
相关语句
  相似匹配句对
     The intensity of stresses(?)
     并计算了应力强度(?)
短句来源
     OPTIXAL INTENSITY AUTOCORRELATION
     光学强度自相关
短句来源
     It was not grazed in the year of sowing.
     建植第一年不放牧。
短句来源
     The pasture was continuously grazed by sheep.
     试验地用于绵羊的连续放牧。
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This study was dealt with the effects of grazing intensities on pasture and ewe productivities at an improved mountain pasture, which was located on Nan Shan Livestock Farm, Hu Nan province, in 1988. Three grazing intensities (high 1.5mu/head, medium 2mu/head, and lower 2.5mu/h(?)ad) were not affected ewe reproductive efficiency and total yield of forage grass (p>0.05). However, The species composition of the pasture and ewe gain in livesweight were affected. The result shows that increasing grazing...

This study was dealt with the effects of grazing intensities on pasture and ewe productivities at an improved mountain pasture, which was located on Nan Shan Livestock Farm, Hu Nan province, in 1988. Three grazing intensities (high 1.5mu/head, medium 2mu/head, and lower 2.5mu/h(?)ad) were not affected ewe reproductive efficiency and total yield of forage grass (p>0.05). However, The species composition of the pasture and ewe gain in livesweight were affected. The result shows that increasing grazing intensity could increased tiller number of planted grass and controled tiller of wild grasses, and increased ewe livesweight. The conclusion shown that the medium and higher grazing intensity will be efficient on improved mountain pasture in Nan Shan.

本试验是1988年在湖南省南山牧场改良草地上用绵羊进行的3种放牧强度的放牧研究。结果表明:不同放牧强度对牧草产量、绵羊繁殖率和增重差异均不显著(P>0.05),但以每亩草地计算,不同放牧强度绵羊增重差异显著(P<0.01)。高放牧强度(每羊1.5亩草地)能促进人工栽培牧草分蘖,抑制野生杂草数量。

The results of a systematic study and practice on subtropical red loam hillyregion of south china were summarized in this paper,covering the selection offorage varieties,grassland establishment,management and utilization,and sheepproduction:1)The high temperature and severe drought were the chief causes of themortality of temprate season grasses.The selection of the varieties adapted tothe local condition and the technique of seedling protection were the keys to theman-made grassland construction.2)It's feasible...

The results of a systematic study and practice on subtropical red loam hillyregion of south china were summarized in this paper,covering the selection offorage varieties,grassland establishment,management and utilization,and sheepproduction:1)The high temperature and severe drought were the chief causes of themortality of temprate season grasses.The selection of the varieties adapted tothe local condition and the technique of seedling protection were the keys to theman-made grassland construction.2)It's feasible to establish a man-made grassland mixing temperate seasongrass and warm season grass.3)Biological and physical methods should be considered as main methodsfor weeding,with the subsidiary of chemical method.The fertilizer efficiency inthe early stage of the establishment was phosphate>nitrogen>potassium,andlater,potassium>Nitrogen>phosphate,and therefore fertilizers should beapplied accordingly.4)Rotation system is important for the rational utilization of grassland.The grazing intensity should be low with the utilization ratio of not over 30%in the early stage of establishment,and 60% after two years.5)The practice of forage planting and sheep raising in man-made grass-land had a good result in erosion control.The soil erosion in natural pas-ture and the land growing peanuts were 2 and 4 times as serious as man-madegrassland respectively.6)Sheep production could be well developed in hot and humid red loamhilly region,given that the management,feedstuff supplying and disease cont-rol were well organized.7)Under reasonable management,the output per mu per year of forageand sheep production was 7.7% more than dry agriculture.8)Importance should be further attached to the selection of temperate andwarm season varieties of both legum and grasses.Moreover,the combination ofanimal husbandry,forestry,fruit production and agricuture needs further study

本文针对中亚热带红壤丘陵岗地草地资源状况和土壤气候特点,总结了自1986~1990年对草种筛选、草地建植、草地管理、草地利用和养羊等方面比较系统的研究结果和生产结果,初步结论是:1.温季牧草越夏死亡原因是七八月高温干旱的相互影响.选择适应这一特定建植环境的草种和保苗技术,是红壤丘陵岗地建植人工草地的成败关键.2.提出了建植温、热混合型草地,实现四季供青的可行性.3.草地杂草的防治,应采取生物、物理方法为主,辅之以化学方法的综合技术措施.对肥料三要素的施用应因时有所侧重,在草地建植初期,三要素的效应是磷>氮>钾;以后则为钾>氮>磷。4.划区轮牧对合理利用草地非常重要,初建草地放牧强度要小,利用率应不超过30%为宜;二年以上的草地利用率,一般应控制在60%左右。5.种草养畜对控制水土流失有良好效果,天然草地和花生地的土壤流失量,分别比人工草地多2.4倍和4倍.6.在高温高湿的红壤丘陵区,只要抓好高温季节的管理,饲草料的生产供应和疾病防治三个环节,完全可以养好绵羊。7.在合理经营下,种草养羊的年亩平均净产值比同等条件下的旱作农业高7.7%,经济效益明显。8.提出了今后要重视继续筛选温、热两季豆科牧草和温季禾本科牧草...

本文针对中亚热带红壤丘陵岗地草地资源状况和土壤气候特点,总结了自1986~1990年对草种筛选、草地建植、草地管理、草地利用和养羊等方面比较系统的研究结果和生产结果,初步结论是:1.温季牧草越夏死亡原因是七八月高温干旱的相互影响.选择适应这一特定建植环境的草种和保苗技术,是红壤丘陵岗地建植人工草地的成败关键.2.提出了建植温、热混合型草地,实现四季供青的可行性.3.草地杂草的防治,应采取生物、物理方法为主,辅之以化学方法的综合技术措施.对肥料三要素的施用应因时有所侧重,在草地建植初期,三要素的效应是磷>氮>钾;以后则为钾>氮>磷。4.划区轮牧对合理利用草地非常重要,初建草地放牧强度要小,利用率应不超过30%为宜;二年以上的草地利用率,一般应控制在60%左右。5.种草养畜对控制水土流失有良好效果,天然草地和花生地的土壤流失量,分别比人工草地多2.4倍和4倍.6.在高温高湿的红壤丘陵区,只要抓好高温季节的管理,饲草料的生产供应和疾病防治三个环节,完全可以养好绵羊。7.在合理经营下,种草养羊的年亩平均净产值比同等条件下的旱作农业高7.7%,经济效益明显。8.提出了今后要重视继续筛选温、热两季豆科牧草和温季禾本科牧草.考虑红壤丘陵岗地利用上的多宜性,要深入研究种草养畜两个能量转化效的提高;研究草林、草果、草与农作的合理结合,提高综合经济效益.

ABSTRACT The relations between grazing intensity, yield of pasture and the animal production in mountain of sub-tropic were investigated. The results indicated that the effects of the grazing intensity on the yield of pasture and the animal productivities were different. Under the A group grazing intensity, the stocking rate and pas-ture utilization was higher, but the yield of pasture and animal productivities were lower. Under the C treat-ment, the stocking rate and the plant utilization...

ABSTRACT The relations between grazing intensity, yield of pasture and the animal production in mountain of sub-tropic were investigated. The results indicated that the effects of the grazing intensity on the yield of pasture and the animal productivities were different. Under the A group grazing intensity, the stocking rate and pas-ture utilization was higher, but the yield of pasture and animal productivities were lower. Under the C treat-ment, the stocking rate and the plant utilization was lower, residuse of senescent grasses increased and regene-ration capacity of plants decreased. The plant utilization was about 60~70% under the B treatment. It seems that the B treatment is suitable or the growth and utilization of pasture.

研究了亚热带中山地区草地不同放牧强度与草地植物产量和放牧家畜生产性能之间的关系,试验结果表明,不同放牧强度对草地植物产量和放牧家畜生产性能的影响不同。在A组放牧强度的载畜量水平,草地植物利用率高,植物产量和畜产品产量低;在C组放牧强度的载畜量水平,草地植物利用率低,老草残留,植物再生力降低;在B组放牧强度的载畜量水平,草地植物的利用率为60~70%,对植物生长和利用有利。

 
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