Research On Water-saving Cultivation Technique Of Spring Wheat In Yellow River Irrigation Region Of Ningxia

This experiment carried out 5 species irrigation treatments and 3 species fertilization levels, by research on soil moisture influence wheat's growth development, appearance, physiological and yields index sign etc, under the field conditions of the experimental farm of the University of Ningxia, in 2003 and 2004 two years. The research aim of this thesis is to draw up a set of practicable and effective water-saving cultivation technique ( reduced water quantity but don't reduce the yield output or reduce a little yield output ) of spring wheat in Yellow river irrigation region of Ningxia.Comprehensive two years of the research results are shown as follows:1, In the silting-soil and high-yield distract of yellow river irrigation region of Ningxia, infuse four times aqua is more the scientific and reasonable irrigation mode in wheat wholly grow period.2,The any period water deficit all will make the grow progress quickly, and shorten the grow period in the different degree, and inhibition the growth development of the spring wheat, and affect the normal growth of the index signs, such as its appearance and physiology...etc, and affect the yield, the end performance make yield lower.3 , The any period water deficit all will make the wheat output reduction, but the period of the water deficit dissimilarity, its output reduction range is as well different. With lack the irrigation for the first time the aqueous treating output reduction degree biggest, compare to check against output reduction 13.48%; The next in order is to lack the irrigation the aqueous treating for the third time, compare to check against output reduction 11.41%; But lack to infuse the second and fourth treat, the output reduction ranges compare with check smaller, distinguish to 4.35% and 5.38%.4, On the production, if macro view up infuse the amount of aqua to be subjected to the restriction enzymes, really cant satisfy to infuse four times aqua, can infuse only three times under aqueous circumstance, should orchestrate to adjust to like as far as possible in the tiny Taoist temple management before grow expect to be the irrigation of the first aqua, is the irrigation of the third aqua the next in order, in order to satisfied the need that the spring wheat grows the development with maximum limit, made output reduction lose be as low as the minimum degree.5, Along with the increment of the fertilization quantity, it can alleviate effectively because of the influence of the water deficit upon the wheat, growth development and its yield. Therefore, improvement of soil fertility can be seen one boost production of the species availability measure in thewater deficit region.6, This research results has the certain use for reference to the appliance value in the look alike north spring wheat irrigation plant the region.