The optimal irrigation time and period for sunflower were designed.
确定了向日葵最佳灌水次数和灌水时段。
It is based on actual evapotranspiration capacity, effective rainfall and water reserve of soil to forecast irrigation time.
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。
The economic benefit of irrigation and exposing polyethylene mulch after 35 days in the experiment with different exposing polyethylene mulch and irrigation time was best.
不同时间揭膜与灌水试验以35天揭膜后灌水的处理经济效益最好。
However, should still be small water frequently watering, not flood irrigation time, generally every 4 to 5 days after watering 1 times, cooler weather, basically 1 times a week.
但是，浇水时仍应小水勤浇，而不可大水漫灌此时，一般每4 ~5天浇水1次，天气转凉以后，基本上每周1次。
Research results showed that the surface shape factor was not a constant value, but a variable value with the change of irrigation time, water advance distance and other factors.
研究表明同一次畦灌过程中地表储水形状系数并非恒定值，而是随灌水时间和水流推进距离等因素变化的。
With the land so arid, he spends a lot of time tending to the system of irrigation ditches that run through the property.
土地很干旱，他花费了大量的时间去挖掘灌溉水渠来灌溉牧场。
For example, cheap forms of irrigation have depleted the water table in many farm areas of India, while at the same time adding near-toxic levels of salts from fertilizers to the soil.
例如成本低廉的灌溉方式已经使印度很多地区的地下水干涸，化肥中高剂量的盐分残留在土壤内。
Soil amendments can be added directly to the drip irrigation feed, saving time and resources.
土壤添加物可直接添加到饲料滴灌，节约时间和资源。
And, the system can realize functions of automatic irrigation, drainage warning, real time clock, historical data inquiry, data up-transmission and two-way communication.
系统能够实现自动化灌溉，具有排水警示、实时时钟、历史数据查询、数据上传及双向通信等功能。
But for a long time past, the study on the river by scholars chiefly focused on the state of its silt, and the changes in its course and irrigation, with little discussion about its appellation.
但是，多年以来，学者们对黄河的研究多集中于黄河的泥沙情况、河道变迁和水利变化等问题，而对黄河名称的由来论述甚少。
Worry about it out of trouble, while in time "water Margin" and to critique, while rolling a large Bei Bei irrigation water, trying to pressure down the heat just budding.
担心它又出来闹事，一边赶《水浒传》的稿件时，一边咕噜咕噜地灌了一大杯杯水，试图把刚萌芽的热气压下来。
This paper advances an economic evaluation method to prove the economic rationalization for renewal of irrigation techniques and determine the proper time for the renewal.
本文提出了灌溉技术更新的经济评价方法，用于论证技术更新的经济合理性，并确定适宜的更新时间。
At one time or another, they have been explained as Inca roads, irrigation plans, images to be appreciated from primitive hot-air balloons, and, most laughably, landing strips for alien spacecraft.
曾几何时，这些路被解释为诸如印加之路、灌溉植物、原始热气球的图解，甚至最为可笑的一种解释是，外星飞船的着陆点。
And the skilled technicians who devised irrigation system and erected the marvelous buildings of the ancient world were the civil engineers of there time.
设计灌溉系统和建立了优秀建筑的古代世界的技术高超的技师是当时的土建工程师。
The irrigating water quota , number of irrigation and frequency of irrigation , which is sure to provide the water in time to the forage grass field and get highly stable yield .
为保证饲草料地土壤水分的适时供给并获得稳产高产所确定的灌溉定额，灌水次数和灌水时间。
Sprinklers, garden irrigation systems and unattended hoses are not permitted at any time.
严禁使用花洒、自动喷灌系统以及无人值守的灌溉系统。
At the same time, the method of irrigation for konjac no-soil cultivation is studied.
同时对魔芋无土栽培的灌水方式也进行了研究。
The soil temperature in different time performance different, but all are lower than that of drip irrigation under mulch film.
不同渗灌处理在不同时段内地温表现不同，但都比膜下软管滴灌略低。
At the same time, it puts forword some attentive problems on popularizing spray irrigation.
文中还提出了几点在推广喷灌技术中应注意的问题。
Uniform irrigation requires that this period of time be no longer than one fourth of the total irrigation period.
均匀灌溉要求灌水时间不长于总灌水时间的四分之一。
Sediment deposition exists in the lake mouth of Changdou Harbor for a long time and develops seriously. It exerts great influences on the discharge and irrigation capacity of the river.
长兜港口门淤积现象由来已久，且呈日趋严重之势，极大影响了河道泄洪排涝与灌溉能力的发挥。
Irrigation agriculture is a pillar industry in Heilongjiang Reclamation area. At the same time, large irrigation area is an important marketable grain base.
灌溉农业是黑龙江垦区的支柱产业，而大型灌区又是商品粮生产的重要基地。
The study of influence of sowing humidity, irrigation and sowing time on the growth and yield of cotton was carried out in this paper.
通过播墒、灌水次数、播期对棉花的生长发育和产量的影响进行研究。
The next essential piece of information is the total amount of time that the irrigation system operated that night, also referred to as "total run time."
第二和重要的数据信息是每晚喷灌系统运行的总时间，称作总运行时间。
The results show that the system can irrigate at proper time and adequate quantity, and effectively fulfills water-saving irrigation.
实际运行表明，该系统能根据土壤水分适时、适量灌溉，有效地实现了节水灌溉。
Comparative experiments was conducted on the effect of one-time irrigation and fertilization on the DBH and crown density of young 107 poplar plantations of even planting density.
对等密度107杨幼龄林进行一次性施肥灌溉措施对比试验，结果表明，一次性水肥措施对其幼林未郁闭前各龄期胸径生长量和郁闭度均有促进作用。
To satisfy heavier irrigation tasks for the time being, the system adopts PLC programmable controller to take place of traditional relay protection of power system.
使用PLC可编程序控制器取代传统的继电保护控制，以满足目前日益繁重的灌溉任务；
At the same time, the multiple cropping index, irrigation area, grain yield and the rate of irrigation had been improved increasingly.
耕地灌溉率、复种指数、耕地灌溉面积、粮食产量不断提高；
At the same time, the multiple cropping index, irrigation area, grain yield and the rate of irrigation had been improved increasingly.
耕地灌溉率、复种指数、耕地灌溉面积、粮食产量不断提高；
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