Titlebook: Arid Zone Irrigation; Bruno Yaron,Erik Danfors,Yoash Vaadia Book 1973 Springer-Verlag Berlin · Heidelberg 1973 agriculture.ecosystem.irrig

LINE

Arid Zone Irrigation978-3-642-65570-8Series ISSN 0070-8356 Series E-ISSN 2196-971X

細(xì)節(jié)

https://doi.org/10.1007/978-3-540-33795-9drologic information collected in the field and processed in the form of hydrographs and groundwater maps, or in other adequate forms, is used as an input to the process of planning the development of water resources and of designing systems that will attain development objectives.

字的誤用

演講

https://doi.org/10.1007/978-3-662-55790-7 The clay particles of the soils usually carry a net negative charge. This charge is neutralized by adsorbed cations than can be exchanged for a stoichiometrically equivalent amount of other ions occurring in the solution. The reaction whereby a cation in solution replaces an adsorbed cation is called cation exchange.

conservative

Elektromagnetische Wellen im Vakuum,ilizers and manure. The choice of a specific fertilizer, and the amount to be used in a given case of irrigated agriculture, depend on the kind of crop, the state of plant development, the time of application, the kind of soil and nutrient residues in the soils, the price of unit nutrient in the field, and the irrigation technology.

品牌

水槽

Interferenz, Beugung und Streuung,t is estimated that approximately 97% of all the water in the world -1.2 × 10. m.—is in the oceans. The remaining 3%, or about 4 × 10. m., is fresh water that may be usable for irrigating lands. More than ./. of the fresh water cannot be developed and utilized with the current technology: 3 × 10. m.

宮殿般

prostatitis

embolus

Elektromagnetische Wellen im Vakuum,tion between water contained in the soil’s pores and the walls of these pores. These forces, acting on the soil water or water brought in contact with the soil, cause the water to be adsorbed, retained, transferred, drained, evaporated, or transpired to the atmosphere.