The paper mainly adopts the methods of literature and investigation, including basic theory research, typical investigation research, consultation of literature, interview with experts and leaders of plant protection system, discussions with people from private pesticide enterprises and questionnaire.
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Base on investigation of soil and water loss in Baipenzhu reservoir catchment area, experimental research on rainfall-runoff-sediment yield of typical erosion landform and vegetation was carried out.
在对白盆珠水库库区开展水土流失实地调查的基础上，选择库区典型的侵蚀地貌类型与植被类型进行降雨—径流—产沙规律的初步研究。
Methods Using cluster sampling and typical investigation, a spot research was taken while experimental indexes were determined by clinical, biochemical and toxicologic methods.
方法采用整群抽样与典型调查结合的方法进行现场调查，结合临床检查、生化分析和毒理学方法进行实验室检测。
With investigation on the spot and data collection, the context proceeds to the typical slope in details of research about transform and the failure mechanism and evaluation with the stability.
本文在现场调研和资料收集的基础上，对广北段典型边坡的变形破坏机制和稳定性评价进行了详尽的研究。
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