土壤覆盖

With the increase of the absolute altitude, the soil water at different depth showed incensed at first, and then decreased.

在植被生长季节，土壤水分状况受植被覆盖和地形因素影响较大。

Based on the climate effect of the vegetation and soil moisture around Tibet plateau, this paper studies the impact of different surface covers on regional climate, and the physic machines of vegetation action on climate and water cycle.

在研究了青藏高原及其周围地区植被、土壤湿度气候效应的基础上，探讨了长江流域不同地表覆盖类型的区域气候的作用、植被对气候和地—气系统水循环的影响，揭示了植被对气候和水循环作用的物理机制。

Residues of dicofol in soils, citrus fruits, Ageratum conyzoides of citrus orchards in 13 locations, Fujian province, were analyzed.

测定了福建省南平、福州、宁德等地13个柑桔园土壤、柑桔果实及覆盖植物胜红蓟三氯杀螨醇的含量。

Good-harvest cloth for vegetable and amphimacer, float covering, non-woven, anti-frost cloth, root-caring cloth, sprout-nursing cloth, soil warm-keeping cloth, shed curtain for greenhouse

用途：蔬菜、瓜果丰收布、浮面覆盖非织布、防霜冻布、护根布防虫害布、育秧布、土壤保温布、温室大棚隔帘等。

At one time, we emphasized the solar radiation transfer mechanics. To advance the estimation precision, in this paper, we classed land cover into four layer, canopy of Robinia pseudoacacia L ,top of Melilotus albus Desr,bottome of Melilotus albus Desr and layer of soil, separately estimated their fluxes of moisture, heat and CO2 ,actualized the separated simulation for each composement in soil-vegetation-atmosphere contimuum.

同时，本次研究强调了太阳辐射在冠层间的辐射传输机制，为了提高估算精度，本文把地表覆盖分为刺槐冠层，草木樨上层、草木樨下层及土壤层四个层面来分别估算其水热及CO2通量，做到了土壤-植被-大气连续体能量及物质通量的分离模拟。

If possible, in the year before you plant potatoes, plant a cover crop to improve the soil and the potato production.

如果可能的话，在中土豆的前一年种一种覆盖作物来改善土壤，提高土豆产量。

For testing the effect of crop residue cover on soil temperature at various percentages of covered areas,the test plot was established in west rainless region of Heilongjiang Province.

在黑龙江省西部干旱区建立不同残茬覆盖对土壤温度影响试验区，采用W QG-16。

The CO2 and O2 densities in the curst cover soil had certain negative relativity, but their related coefficient couldn't be given with the assurance, needing a further study.

硬覆盖路面下土壤CO2浓度与O2浓度之间存在一定的负相关性。但受多因素影响，它们的相关系数难以确定，有待进一步探讨。

In order to research the effects of minimum tillage and no-tillage patterns on yield and senescence of flag leaf of winter wheat, four tillage patterns were adopted in Longkou city, Shandong Province, China for three years. Four tillage patterns were as follows: conventional tillage with straw turnover, rotary tillage with straw turnover, serrated disk harrow tillage with straw turnover, no-tillage with straw cover. Effects of different tillage patterns on the activities of superoxide dismutase, peroxidase and the contents of malondialdehyde and soluble protein of the winter wheat flag leaves after anthesis were analyzed.

为了研究少免耕耕作体系对冬小麦旗叶衰老状况的影响，采用4种土壤耕作模式（常规耕作秸秆还田、旋耕秸秆还田、耙耕秸秆还田、免耕秸秆覆盖）在山东龙口进行了3年田间试验，研究了耕作模式对小麦产量及花后不同时期旗叶超氧化物歧化酶和过氧化物酶活性、丙二醛和可溶性蛋白含量的影响。

It is suggested that policy should be on the basis of minimum irrigation, soil mulching and straw and manure utilization, and the leading one of its measures should be to use high-salined groundwater as an accompaniment of river water, by the integration of the power-pumped-Yellow-River irrigation system and well-water irrigation system, to lower the watertable and reduce the irrigation cost. Thus the dynamic balance of salts, as well as the prevention and reclamation of salinization, will have been kept through the management of water and soil organic matter.

在此基础上结合国内外盐渍化防治及盐渍土改良利用方面的发展趋势，笔者提出应该以水盐平衡理论为指导，以节水灌溉为前提，以地面覆盖和土壤培肥为基础，以井排系统与引黄灌水系统并网，井渠混灌，降低地下水位为突破口，通过对水分和肥力的调控和管理达到对盐分的调控和管理，使盐分在土体或灌区实现动态平衡，从而达到土壤盐渍化的预防和治理。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。