实现农业高效用水的途径

我国水资源短缺与浪费并存，农业是用水大户．用水效率偏低．因此．农业节水势在必行。本文论述了适合我国基本国情的农业高效用水技术，主要包括：推广简便易行的节水灌溉技术、耕作覆盖保墒、节水灌溉与农业技术有机结合、以及改革灌区用水管理等。     

新罗区发展农业节水灌溉的思路与对策

节水灌溉是解决水资源短缺和促进农业可持续发展的有效途径。龙岩市新罗区在节水灌溉方面得到一定的发展，但纵观全区现状不容乐观。针对存在的问题，需要依据实际情况，对灌区进行节水工程改造，完善配套管理制度，才达到节水增效、节水增收的目的。     

节水灌溉与水利管理制度创新

通过分析中国水资源现状，提出中国建设节水型社会的重点在于农业灌溉节水；农业灌溉节水的关键在于制度创新，达到水资源可持续利用，使其支持经济社会的可持续发展之目的。     

节水灌溉存在的问题及技术措施

介绍了节水灌溉的概念和当前节水灌溉存在的问题,并针对这些问题提出了一些解决对策,可为节水灌溉事业的发展提供一定的参考.     

也谈发展节水灌溉技术

分别从保障国家粮食安全需要和保障国家用水安全需要阐述了发展节水灌溉技术的重要性和必要性.从灌溉用水管理模式改革和稳定推进农业水价改革两方面叙述了发展节水灌溉技术的可行性和可能性.对大力推广节水灌溉技术有一定的指导作用.     

简论农业节水灌溉技术

论述了发展节水灌溉的意义,各种节水灌溉的技术.     

晋中东部节水灌溉发展思路的讨论

晋中东部是传统的农业县,种植业是主要产业,近几年的持续干旱使农业生产损失巨大,发展节水灌溉势在必行。本文从产业结构调整、水资源合理利用、节水灌溉工程、农业节水和节水管理方面论述了节水灌溉发展的思路。     

浅论东北地区农业节水灌溉

东北地区是我国重要商品粮基地,本文参考国内外农业节水灌溉,设立了以喷灌、滴灌等节水灌溉技术,取得很大的经济效益.     

宝鸡峡灌区高产小麦节水灌溉制度探讨

随着人口的不断增长和水资源的日益短缺,发展节水高效农业是主要目标。节水灌溉作为一种有效的方法被广泛应用。然而,如何充分发挥节水灌溉的优势,就需要对其有深刻的认识和理解。本文通过对陕西宝鸡峡灌区小麦不同生育期需水量的研究,制订了科学合理的节水灌溉制度,为今后该地区的农业生产提供了重要的依据。     

新罗区发展农业节水灌溉的思路与对策

节水灌溉是解决水资源短缺和促进农业可持续发展的有效途径。龙岩市新罗区在节水灌溉方面得到一定的发展,但纵观全区现状不容乐观。针对存在的问题,需要依据实际情况,对灌区进行节水工程改造,完善配套管理制度,才达到节水增效、节水增收的目的。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.