查询词典 irrigation

Based on the equivalent cylindrical pattern of soil wetting front, the model of dripper discharge was developed mathematically, and the change of each factor with the dripper discharge was analyzed to determine the main influential factors of dripper discharge design for drip irrigation system.

该文以等效圆柱湿润体模型为基础，建立了点源滴灌滴头流量的数学模型，针对模型中各因子随滴头流量的变化过程进行实验分析，确定影响点源滴灌滴头流量设计的主要因素。

In order to know the effects of mulch-drip irrigation on soil enzyme activities of saline-sodic soil with shallow water table, activities of alkaline phosphatase, urease, and invertase around the dripper, within 30 cm in horizontal direction and 40 cm in vertical direction from the dripper during the reclamation process, were investigated. Changes and distribution of soil enzyme activities, also their relationships with principal soil environment factors were studied.

为了解地下水浅埋区重度盐碱地覆膜滴灌对土壤酶活性的影响，测定了重度盐碱地在滴灌利用过程中距离滴头不同水平位置（0～30 cm）和垂直深度（0～40 cm）的土壤碱性磷酸酶、脲酶和蔗糖酶活性，并对土壤酶活性的变化、空间分布特征及与土壤环境因子之间的相关关系进行分析。

Based on experiments, the movement of the wetting front was studied in clayloam, loam, and in sandy soil under point drip irrigation, and the effects of soil types, soil density, soil initial moisture, dripper discharge, and drop water to the movement of wetted front were analyzed.

以试验为基础，针对重壤土、中壤土、砂壤土研究滴灌点源入渗的湿润锋运移规律，分析土壤种类、土壤容重、土壤初始含水率、滴头流量、灌水量等主要因子对湿润锋运动的影响。

The experimental results show that there is an essential difference between the uniformity of dripper discharge along the drip line and the uniformity of soil moisture in field in terms of the design of linear source drip irrigation.

线源滴灌设计中，滴灌管出流均匀性与土壤湿润均匀性有本质不同，前者仅仅是后者必要的基础，但是要保证线源滴灌土壤湿润均匀性，还需要考虑滴头间距、滴头流量、滴水量和土壤质地的差别。

Irrigating water supply had more effects on the moisture uniformity than dripper discharge in soil along the vertical drip irrigation pipe direction and intersection of wetted front.

灌水量对垂直滴灌管方向和湿润锋交汇处土壤水分均匀性的影响比滴头流量对其影响大。

Maps of monthly potential evapotranspiration could also be generated indirectly through maps of monthly averaged air temperature and global solar radiation produced by using geostatistics. These maps were useful to in making irrigation plans and designing response strategies to droughtiness.

利用地理统计技术将气象测站量得之月平均气温和日射量资料面化后，可间接得出原本无法面化之潜在蒸发散量的时空分布资讯，是拟定农田灌溉计画和因应土壤乾旱对策的重要资讯。

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。

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。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新