Occupational epidemiological investigation in field and animal experiments were performed to study the toxicity of acephate.
乙酰甲胺磷动物毒性试验及接触工人的职业流行病学调查。
Field experiments was used to study the change of soil N2O discharge flux in the northwestern arid and semi-arid areas.
田间试验研究了西北干旱半干旱地区地膜覆盖对土壤中n 2o排放通量变化的影响。
This paper mainly study the feature of sawing force under stress field. The experiments prove that the cutting force under stress field is smaller than that of common sawing.
本文主要研究了应力场下锯切切削力的特点。试验证明在拉应力场下锯切工件比普通锯切工件的锯切力小，使切削更加有利、高效。
Laboratory incubation, pot and field experiments were adopted to study the nitrogen mineralization and response of crops in purple soils amended With organic or chemical fertilizers.
采用培养法和田、盆试验法对不同肥料处理的紫色土氮素矿化作用与作物吸氮效应进行了研究。
A new method of the study of fault permeability is introduced using dynamic monitoring data of the radioisotope tracer. Field experiments are done in two faults achieving success.
介绍了一种用放射性同位素示踪剂动态监测资料研究断层渗透率的新方法，并在两个断块开展了现场试验，均取得了成功。
In this study, we examined the gas regulation services supported by rice paddy ecosystems, based on the results of field experiments in Wusi Farm of Shanghai in 2002.
论文以2002年在上海五四农场稻田生态系统田间实验为基础，运用造林成本法、碳税法和工业制氧法对稻田生态系统气体调节功能及其价值进行研究。
A field experiments was conducted to study soil moisture and water potential changes in farmlands with a shallow water table during summer maize and winter wheat seasons.
通过对夏玉米和冬小麦生长季节期间土壤水动态观测试验，探讨了地下水浅埋条件下土壤水动态的变化规律。
Pot experiments were carried out to study the effects of the seedlings cultured in different ways on growth and development of tobacco plant during the field period (from transplanting to budding).
通过盆栽试验研究了不同移栽苗对大田期（移栽-现蕾）烟株生长发育的影响。
Field experiments out to study the differences spike differentiation and morphogenesis among triticale, secale and triticum.
本文采用大田试验研究了小黑麦、 黑麦与普通小麦幼穗分化及形态建成的差异。
Field experiments were carried out to study the effects of different saline soils on growth process and yield of sunflower in the Hetao irrigation area.
通过对河套灌区不同盐渍化土壤进行的田间试验，分析了在不同生育阶段盐分水平对向日葵生长和产量的影响。
Pot and field experiments were conducted to study the mechanism of rare earth (RE) on effect of increase peanut yield.
通过砂培和田间小区试验以及电子显微技术，研究了外源稀土对花生的增产机理。
Field experiments were conducted to study the biomass of soil microbe in the artificial meadow in seashore saline soils at Wudi, Shandong province.
在山东无棣设置田间试验，研究了海涂人工草场土壤微生物量(简称生物量)。
In field conditions, rainfall simulation experiments were conducted to study the influence of slope, rainfall and tillage on infiltration in sloping farmland of purple soil.
在田间条件下，利用人工模拟降雨研究了坡度、降雨、耕作方式对紫色土坡耕地入渗过程的影响。
In this study, the influences of different nitrogen fertilizer variety, nitrogen level and basal manure on nitrate accumulation and quality of cabbage were investigated in field experiments.
本文在田间试验条件下探讨了氮肥品种、用量及不同基肥种类对包心菜硝酸盐累积及品质的影响。
Pot experiments and field trails were conducted to study the effect of soil lead levels on phytotoxicity, growth and tissue accumulation in soybean and rice grown on sludge treated calcareous soil.
采用盆栽和小区试验，研究在石灰性土壤上污泥施肥时铅污染对水稻和大豆生长发育的影响，两种作物对土壤中铅的吸收、迁移和累积规律。
Pot and field experiments were conducted to study the effects of compound bio-organic fertilizer on the growth, yield and quality of flue-cured tobacco.
通过盆栽试验和田间试验，研究复合生物有机肥对烤烟生长发育以及产量、品质的影响。
Field experiments were conducted to study the effects of combined application of organic manure and chemical fertilizer on yield and quality of Chinese cabbage.
试验研究了有机肥与化肥配施对结球白菜的产量和品质的影响。
Field experiments were conducted to study the impact of rejuvenated water irrigation on the quality of tomato, the heavy metal element in fruit and soil.
通过田间试验，分析了再生水灌溉对番茄果实品质、重金属以及土壤重金属的影响。
Though full materials and many field experiments in study area, surface material compositions, moisture state and vegetation condition are analyzed comprehensively.
本文通过详实的资料和细致地野外调查，全面地分析了通辽地区的地表物质组成、水分状况及其植被状况。
A comparison study of some physiologic indicators of rice received common urea or polymer coated urea was conducted by using pot and field microplot experiments.
采用盆栽试验和田间微区试验，对施用覆膜尿素和普通尿素的水稻生理指标进行测定。
Field experiments were made to study the site specific function of fermentation digested effluent and sludge in the growth of cucumber and lettuce.
作为实例本文通过田间试验研究沼液、沼渣在莴笋、黄瓜生长中的作用。
Pot and field experiments were conducted to study the effect of am fungi on yield and quality of flue cured tobacco under different potassium applied amount.
通过盆栽和大田试验，研究了施钾和AM真菌对烤烟产量、品质的影响。
Study of water-demand regulations and water use efficiencies under condition of different irrigation systems of rice were carried out by serial field-scale experiments.
根据田间试验对宁夏引黄灌区水稻需水规律及节水灌溉条件下水稻田水分利用效率开展研究。
Field experiments were conducted to study cotton nitrogen diagnosis and topdressing recommendation by measuring cotton tissue NO 3 - concentration with Reflectoquant .
应用反射仪测定棉株叶组织硝态氮含量，研究了硝态氮作为棉花氮营养诊断和追肥推荐指标的可行性。
Field fertilizer experiments were conducted to study K uptake, distribution and use efficiency of hybrid and conventional rice un der different low-K stress conditions.
通过田间试验，研究了在不同程度低钾胁迫条件下，杂交稻和常规稻在不同生育阶段对钾的吸收、分配和利用效率。
Field experiments were carried out to study the effects of bio-organic fertilizer on cucumber.
田间试验研究了生物有机肥在黄瓜上的应用效果。
Field experiments were carried out to study the effects of bio-organic fertilizer on cucumber.
田间试验研究了生物有机肥在黄瓜上的应用效果。
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