查询词典 dry farming

Therefore, we need to develop modern irrigation farming and modern dry farming characteristic of water saving and high efficiency.

为此，要实施节水高效的现代灌溉农业和现代旱作农业。

Dry farming ,irrigation farming,and the cattle and sheep herding are the main

旱地农业，灌溉农业和牛羊牧业是美国西部大平原地区的主要活动。

According to the present situation of dry farming research and practice, it is thought that in order to increase the dry farming yield, the water-retaining materialmust be scientifically applied to bring it into fullplay.

通过对旱地农业研究和实践现状的分析，认为高分子保水材料的科学应用和充分发挥其效能，是解决旱地农业增产问题的重要发展方向。

Dry farming ,irrigation farming, and the cattle and sheep herding are the main activities of the Great Plains of the American West.

旱地农业，灌溉农业和牛羊牧业是美国西部大平原地区的主要活动。

Dry farming ,irrigation farming,and the cattle and sheep herdingare the main cativities of the Great Plains of the American West.

旱地农业，灌溉农业和牛羊牧业是美国西部大平原地区的主要活动。

Farming in the Office of the rapid mobilization, and vigorously promote a two-furrow mainly dry farming techniques.

省农牧厅迅速组织动员，大力推广以双垄沟为主的旱作农业技术。

Dry farming, irrigation farming, and the cattle and sheep herding are the main cativities of the Great Plains of the American West.

旱地农业，灌溉农业和牛羊牧业是美国西部大平原的主要活动。

Dry farming; dryland farming A system of producing crops in arid and semiarid regions without the use of irrigation.

旱地耕作法指一种在干旱或半干旱土地上不使用灌溉方法生产作物的耕作制度。

Dry farming ,irrigation farming,and the cattle and sheep herding are the main cati vities of the Great Plains of the American West.

旱地农业，灌溉农业和牛羊牧业是美国西部大平原地区的主要活动。

Because of the regional difference of soil and climatic conditions, the division of 4 stages of soil moisture circulation is not all the same between different areas; the soil moisture dynamics between different dry farming areas in the Yellow River Basin is contrasted in this report. The results indicate that soil moisture increases gradually from dry semi-arid area to semi-arid area, dry semi-humid area and semi-humid area, and the high value district generally appears during soil moisture resuming period in rainy season or soil melting period. While the low value district appears at the stage of fast evaporation in spring or slow evaporation in autumn; in views of vertical changes of soil moisture, it is showed that the variation range of upper lays is larger than that of lower among the different dry farming areas in the Yellow River Basin.

由于各区域之间土壤、气候条件的差异，各地土壤水分循环4个阶段的划分也不尽相同；黄河流域不同旱作类型区土壤水分动态变化比较结果表明：就季节变化而言(来源：A70b0B0bC论文网www.abclunwen.com)，由半干旱偏旱区→半干旱区→半湿润偏旱区→半湿润区土壤水分含量呈逐渐增加的变化趋势，而且高值区一般出现在雨季恢复阶段或春季土壤融冻返浆时期；而低值区均出现在春季大量蒸发阶段或秋季缓慢蒸发阶段；就垂直变化而言，黄河流域不同旱作类型区土壤水分垂直变化的趋势均表现为上层变化幅度较下层大。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。