查询词典 irrigation

As one of the key elements in small irrigation systems, self-priming pumps are widely used in agricultural irrigation.

中文摘要：自吸泵广泛应用于农业灌溉，是轻小型喷灌机的重要组件之一。

The relationship between relative yield and relative water use is formulated,based on these data, a optimal irrigation scheduling under sprinkling irrigation condition can be made or the lower level of soil moisture in different growing stage might be teken as the indicator for the scheduling irrifgation in winter wheat.

喷灌条件下土壤水分、硝态氮空间变异特征研究：应用地统计学理论，以半方差函数为工具分析不同灌溉制度下，土壤含水率(0～60cm)和土壤中硝态氮在相应深度的空间分布，用各类模型拟合半方差图，在此基础上应用普通克立格技术估算未知点的土壤含水率，使用最优内插值法绘制土壤含水率和硝态氮在田间的空间分布等值线图。

At last, we compare and analyze WUE under different water supply methods and different water treatments. It indicates WUE of subirrigation is higher than traditional irrigation, so subirrigation is a water-saving irrigation method.

最后，本文比较分析了苗期冬小麦在各种水分处理条件下的土壤水分利用效率，结果表明浸润灌溉条件下的水分利用效率要高于地面灌溉，所以用浸润灌溉方式，可以节约水分，提高水的经济价值。

Subsurface drip irrigation is one of effective irrigation methods. But it is easy to clog.

地下滴灌是一种高效的节水灌溉技术，但系统易于堵塞，堵塞问题成为影响地下滴灌成败的关键。

Subsurface irrigation, also called sub-irrigation, can be considered as a controlled drainage system.

地下灌溉可以看作是一个有控制的排水系统。

The results indicate seawater concentration has no effect on absorbency, pH, relative density, dry matter and water contents in Aloe vera leaves. While, seawater stress causes increased MDA and membrane penetration, decreased phytochroms, prolines and NO_3~--N. It is beneficial to plant growth when irrigation was done with 10% seawater, because of higher ratio of K~+/Na~+ and lower ratio of Na~+/Ca~(2+). In addition, the polysaccharide contents in Aloe vera leaves increase twice and triplication under 25% and 50% seawater irrigation respectively, the barbaloin contents increase over triplication in var. 75% seawater and over twice in var. 50% seawater and var. 100% seawater. However, when seawater concentration exceeds 25% the growth of plant was inhibited, biomass decreased, flowering time was deferred, Ca~(2+) content decreased caused by Na~+ accumulation in leaves.

结果表明：在海水胁迫下，库拉索芦荟全叶汁的吸光度、酸度、相对密度、总固形物和水分含量总体上受海水浓度的影响不大；但芦荟叶的丙二醛含量和质膜透性增加，叶绿体色素、脯氨酸和硝态氮含量减少；在10％海水浇灌下，芦荟叶细胞具有较高的K~+／Na~+比和较低的Na~+／Ca~(2+)比，对库拉索芦荟的生长有一定的促进作用；在25％海水和50％海水浇灌下，芦荟多糖含量提高了2-3倍；在75％海水浇灌下芦荟甙含量增加了3倍多，在50％海水和100％海水灌溉下，其含量也增加了2倍多；当海水浇灌浓度超过25％后，库拉索芦荟的生长明显受到抑制，生物量降低，抽苔期推迟，同时，海水浓度的增加也导致芦荟叶中累积大量Na~+，从而使得芦荟叶中Ca~(2+)含量降低，但Mg~(2+)并没有受到海水浓度的影响；用浓度低于75％的海水浇灌库拉索芦荟可以降低剖面深度在0-100cm之间的土壤盐度；其抗氧化保护酶中超氧化歧化酶的酶活力相对保持稳定，过氧化物酶的酶活力在10％海水浇灌下明显提高，随后则下降，而过氧化氢酶的酶活力则随海水浓度的升高而下降。

Because the large and middle irrigation works cannot effectively play the role in combating drought, farmers only can depend on the small irrigation works to combat drought, so it has caused the underproduction.

内容摘要：2005年荆门区域遭受大旱，由于大中型水利设施不能有效发挥作用，农民只能依托小水利抗旱，造成水稻因旱减产。

The effects of soil density and compositions of soil were mainly changed in upper layer (0～5cm) under the surge flow irrigation. And the undersurface phenomenon was as well as the continuous irrigation.

结果表明： 1。波涌灌溉对土壤表层0～5cm土层容重和土壤粒级组成影响比较大，表层之下与常规连续灌溉基本一致。

Because Valais can be a tad dry, very sophisticated irrigation systems have been installed and sometimes irrigation with the beautiful mountain water is the order of the day.

在这个可能是世界上最美丽的产区内，酒庄都用雪山的清水来灌溉。

We focus on the irrigation and water area, we have good cooperation relations, capable of providing our customers for irrigation and waterscape information.

我们时刻关注着灌溉与水景领域，同业内有着很好的合作关系，能为客户提供多方位的灌溉与水景资讯。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。