The wheat fertilizer recommendation technology system for the agriculture production on loess plateau is advanced by the fertilizer experiment data 利用肥料定位试验资料，提出了适合黄土高原农业生产的冬小麦施肥推荐技术体系。
Road construction and maintenance equipment . bituminous binder spraying machine . dosage measurement and transverse distribution fixed station test bench and method 筑路和养路设备.沥青黏合剂喷洒机.浇注机横向分配与剂量的定位试验台和试验方法
Long - term experiments showed that c ( subscript mic ) - to - c ( subscript org ) of paddy soils with chemical fertilizer applied increased in recent 17 years in half of experiments but not significant 但无论是小区域还是长期定位试验中土壤微生物碳与有机碳相关分析结果均表明，尽管二者具有显著的相关关系，但土壤微生物商与期望值的差异变化很大。
Through field fixed location experiment and some determinations of soil physical and chemical properties , the ameliorative effect and the crop field effect of straw mulching in hilly area of the central sichuan basin was explored 摘要通过田间定位试验和土壤理化性质的测定，探讨了秸秆覆盖对川中丘陵区土壤的改良效果及对作物产量的影响。
( 3 ) the study of gps orientation experiment in this paper , penman do some experiments by gps310 and gps315 . the main experiment including : gps310 odd spot experiment > gps315 relative orientation experiment gps3 10 area experiment ） gps定位试验分析在本课题中，把gps与gis技术应用到农田信息是比较重要的内容，因此笔者利用magellan公司的gps310与gps315做了一系列试验。
Effects of 20 years continuous long - term application of organic manure , chemical fertilizer and organic - chemical combined fertilizer on the results of soil nutrients variation were studied at yucheng experiment area of shandong province 摘要以在山东禹城试验区持续近20年的定位试验为依据，对长期施用有机肥、无机肥、有机无机结合等不同施肥条件下的土壤养分演变进行了系统总结。
First , the dynamics of soil properties in different period during a year from the long - term no - tillage and ridge culture experiment field are researched in order to get the general dynamic properties of organic matter , chemical substances , microbe , ph and eh in soil 首先通过对自然免耕定位试验的有机残体的分解与转化的动态特征研究，得出有机残体分解转化过程中的有机质、养分、微生物及出和eh的动态特征，总结出有机残体分解与微生物关系的一般规律。
The conflict of water consumption between industry , agriculture and living is becoming sharp in suburbs of beijing . based on case study in shunyi county , water requirement and water use efficiency of crops in the region were studied through onsite experiment and typical household survey . on the ground of analyses of the sustainability of regional water resource balance , the trend of water use in the future was projected in this paper 本研究针对北京城郊地区工业、农业和生活用水矛盾日趋突出的现状，以北京市顺义区为典例，通过定位试验和典型调查，对该地区主要农作物的需水量和水分利用效率进行了研究；通过分析区域水资源的平衡利用状况及其可持续性，对未来种植业需水状况进行了预测，并探讨了该地区节水型种植业结构及模式的优化方案。
Due to irrational land utilization , absurd assarting and herding , a series of environmental problems , such as sandy soil , grassland degeneration , soil and water loss , appeared , which severely threatened to survival and development of human being . it was proved that biomic - measure was the radical measure of ecology environment construction and harnessing . thus , a research on choosing a kind of grass , which was good , stronger stress resistance and faster growth velocity , was carried out 黄土高原半干旱区多年来由于不合理的土地利用和滥垦滥牧等现象，致使土壤沙化，草地退化，水土流失等一系列生态环境问题严重威胁着人类的生存与发展，多年的研究已证明，生物措施是生态环境建设与治理的根本性措施，因此，针对目前的自然现状，选择抗逆性强、生长快、生产中急需的优良牧草进行了定位试验研究。
Based on case study in shunyi county , regional water resource balance and the crop characteristics of water usage were studied through onsite experiment and typical household survey . on the ground of analyses above , the way of water saving was probed at the end of the paper 本研究通过定位试验和典型调查，对顺义区种植业系统水分利用效率和节水潜力进行了初步研究，旨在为京郊地区种植业系统节水研究提供基本参数依据和理论支持，为北京市农业节水研究提供参考。
