field survey是什么意思

网络释义

用法例句

Choosing Daliangshan Forest Farm of Shidian county as study area,the environmental factors affecting the occurrence of Pissodes punctatus were studied.

利用逐步回归分析法对其调查数据进行处理,结果表明:在95%的可靠性下,影响施甸大亮山林场华山松木蠹象虫害发生所体现的虫口密度的主要环境因子是华山松林的林分密度,其次是其林分结构和林分所处的海拔高度。

The First 330kV SF_6 Switch Spot Overhaul of Xining Power Supplying Bureau;

西宁供电局首台330k VSF_6开关现场大修总结

The sopt investigation is the key point of treatment of agriculture pollution make the spot investigation timely,effectively,accurately in this paper,we analyses the problems noticed in the spot investigation,make sure the position and function and characteristics of the spot investigation,put forword the content and implementation plan of the work.

现场调查是处理农业污染案件的关键环节,如何在第一时间里及时、准确、有效地做好现场调查工作,本文分析了注意的问题,阐明其地位作用和特点,提出工作内容和实施方案。

The working principle of winding temperature rise and spot calibration method of the pressure type temperature indicating controller were describe in brief.

简述了绕组温升工作原理以及现场校准压力式温度指示控制器的方法。

THE DYNAMIC MODEL OF MEADOW GRASSLAND NATURAL HERBAGES YIELD FORMING IN QINGHAI PLATEAU AND ITS APPLICATION

青海高原草甸草场天然牧草产量形成的动态模式及应用

Study on the Seasonal Change of Cu in the Soil-Grass-Livestock Ecosystem on the Meadow Pasture in Qinghai Lake Beach

青海湖滨草甸草场土-草-畜生态系统中铜的季节性变化研究

Study on relationship between soil enzyme and soil fertility of alpine meadow in different carrying capacities

高寒草甸草场不同载畜量下土壤酶与土壤肥力的关系研究

The Best Improvement Measures Established in Degradation Meadow of Zhaosu Horse Farm;

昭苏马场退化草甸草地最佳改良措施的确立

Effect of Different Grazing Intensity on the Spring and Autumn Meadow Steppe of the Stipa Capillata+herbage;

不同放牧强度对针茅+杂类草草甸草原春秋场的影响

Analysis on Temporal Variation of FPAR on Leymus Chinensis Meadow-steppes

羊草草甸草原FPAR时间变化规律分析

Construction Techniques of Farmland and Grassland Shelterbelt Systems in Alpine Meadow

高寒漫甸区农田草场防护林体系营建技术研究

Study on the Photosynthetic Pigments of Leymus chinensis along with the Salinity-alkalinity Gradients on the Songnen Grassland inNortheastern China;

松嫩盐碱化羊草草甸草原羊草光合色素的研究

Research on Heterogeneity of Tibet Alpine Meadow Grassland Biomass;

西藏高寒草甸草原生物量异质性研究

The index system of the ecological quality evaluation for subalpine meadow

亚高山草甸类草地生态质量评价指标

low mat-forming grass of southern United States and tropical America; grown as a lawn grass.

美国南部和热带美洲的形成草甸的矮草；作为草坪草而种植。

Study in Photosynthetic and Stress Ecophysiology of Leymus Chinensis Along the Salinity-alkalinity Gradients on the Songnen Grassland in Northeastern China;

松嫩不同盐碱化羊草草甸草原羊草光合及逆境生理生态特性研究

The Effects of Different Degradation Gradient to Spatiotemporal Heterogeneity of Forage Nutrition in Meadow and Typical Steppe Grassland;

不同退化梯度草甸草原和典型草原牧草营养时空异质性的研究

Growth and Protective Enzyme Activity of Leymus Chinensis along the Salinity-alkalinity Gradients on the Songnen Grassland in Northeastern China;

松嫩盐碱化羊草草甸草原羊草生长及保护酶活性研究

Study on Sustainable Utilization of Meadow Steppe at Edge of South Mongolia Altiplano;

内蒙古高原南缘草甸草原可持续利用研究

Reproduction Strategy and Transplant Experiment of Kobresia Humilis;

高寒草甸矮嵩草（Kobresia humilis）繁殖对策与移栽试验

Effect on the Meadow Rangeland and Lactating Performance Characters of Sanhe Cow of Grazing System;

放牧制度对草甸草原与三河牛泌乳性能的影响

A Study on Grazing Degenerate Succession of Alpine Meadow in North-west of Sichuan;

川西北高寒草甸草地放牧退化演替研究