They must campaign to repair the ozone shield, halt the greenhouse effect, preserve soil and save the tropical rainforest.
他们为了修护臭氧层，遏止温室效应，保护土壤和拯救热带雨林，必须奔走游说。
This paper studied the effect of fertilization on cucumber growth and yield, soil microbial biomass and soil enzyme activities in sunlight greenhouse in Loess Plateau.
采用田间试验研究了施肥对黄土高原日光温室黄瓜生长发育和产量，以及对土壤微生物区系和土壤酶活性的影响。
A greenhouse study was conducted to investigate the effect of soil as on lettuce growth, its plant availability and toxic critical concentration.
以盆栽试验，研究了砷对莴苣的影响、土壤砷的有效性及其毒性临界浓度。
Effect of soil water on the growth and physiological characteristics of cucumber during fruit stage in greenhouse were studied in this experiment.
研究了土壤水分对温室结果期嫁接和未嫁接黄瓜生长与生理特性的影响。
Forest soil is the important source and sink of greenhouse gas in atmosphere. The main greenhouse effect gases, such as CO2, CH4 and N2O, are related to this system directly or indirectly.
森林土壤是大气温室气体重要的源和汇，主要的温室效应气体CO2、CH4及N2O都直接或间接与这个系统有关。
It is important to study the soil spatial variability of N_2O, CO_2 production and the influencing factors for evaluating the role of forest ecosystems on the impact of the greenhouse effect.
研究森林土壤N_2O、CO_2产生的空间变异性及影响因子对准确估算森林生态系统对温室效应的影响具有重要意义。
The soil carbon pool is the biggest one in the earth surface system and the soil organic carbon (SOC) plays an important role in greenhouse effect and global climate change.
土壤碳库为地球表层系统中最大的碳储库。土壤中的有机碳库对于温室效应与全球气候变化有着重要的控制作用。
The soil carbon pool is the biggest one in the earth surface system and the soil organic carbon (SOC) plays an important role in greenhouse effect and global climate change.
土壤碳库为地球表层系统中最大的碳储库。土壤中的有机碳库对于温室效应与全球气候变化有着重要的控制作用。
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