以实际蒸发蒸腾量、有效降雨量和土壤贮水量来预报未来灌水时间。
It is based on actual evapotranspiration capacity, effective rainfall and water reserve of soil to forecast irrigation time.
这个有效的样例应用程序可以用来比较两个城市的天气数据，具体方法是在LotusSymphony电子表格图表中以图形的方式显示平均降雨量数据。
This nontrivial sample application can be used to compare climate data for two cities through the visualization of their average rainfall data as graphs in a Lotus Symphony spreadsheet chart.
宁夏的干旱从2004年开始，一些区域没有受到有效性的降雨持续达600天之久。
The drought in Ningxia started in 2004 and some districts have not received substantial rainfall for over 600 days.
这项技术很有效，因为当水从海里蒸发，氢和氧的同位素组合升空形成云，接着飘至陆地上空降雨。
The technique works because when water evaporates at sea, a combination of hydrogen and oxygen isotopes rise to form a cloud, which then releases rain when it moves inland.
用降雨机增氧，能有效提高孵化用水的溶氧水平，改良水质，使孵化生产顺利进行。
Using rainmaking machine to increase the dissolved oxygen can effectively raise its level and improve the water quality, so that the incubation can go on well.
在黄土丘陵区要求林草与农作物地在轮作周期内的总耗水量与有效雨量（降雨量与径流深之差）持平。
It is necessery that the total consumptive use of water in the rotation period is equal to the total effective precipitation(pre- cipitation minus runoff depth)in the loess hilly region.
并在此基础上，以光合有效辐射、温度和降雨量作为气候指标，分析了它们与牧草长势之间的关系。
On this basis, this paper takes effective photosynthesis radiation, temperature and rainfall as climatic indexes, and analyzes their relations with pasture growth.
植物能通过改变降雨的分配性能，有效提高其对降水的涵蓄能力和对降水资源的有效利用。
Plant can effectively enhance its rainfall retention capacity and improve efficient utilization of rainfall resource through changing rainfall distribution characteristics.
无论早、晚稻，降雨有效利用量均有所提高，从而获得节水增产之效。
No matter early rice and late rice, the rainfall efficiency is raised, so water-saving and high-yielding could be obtained.
无论早、晚稻，降雨有效利用量均有所提高，从而获得节水增产之效。
No matter early rice and late rice, the rainfall efficiency is raised, so water-saving and high-yielding could be obtained.
应用推荐