| The mechanism of water-saving and yield increasing for beer barley under the condition of water storage irrigation in spring |
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| DOI：10.7606/j.issn.1000-7601.2014.01.013 |
| Key Words: beer barley water storage irrigation soil moisture dynamic water consumption rule yield effect |
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| Abstract: |
| The germination rate, growing and developing dynamics, soil moisture change, water consumption rule and water use efficiency of beer barley under the different quota of water storage irrigation in spring were measured by the TDR soil moisture measuring instrument combined with the micro-l
ysimeters, and conventional determining method for crop indexes, also combined the climate information to compare the advantage of different irrigation treatments. Meteorological materials and other auxiliary data were also used to analyze the effects of different irrigation treatment and analyzed the impacts of different water storage irrigation quotain spring to the soil water, utilization of rainfall and crop yield. The research results have showed that it was really feasi
ble from the technical level to change the water storage irrigation in Winter into the water storage irrigation in spring under the conditions of suitable irrigation quota, using the water storage irrigation technology in spring compared with the winter irrigation, the irrigation water volume can be reduced 75 mm, the soil evaporation reduced 37.4% and the water use efficiency increased 26.2%. It
was advisable to 75 mm for spring irrigation quota, five irrigation times for whole growing period with the irrigation quota of 75 mm for the actual production of barley planting. This technology not only can be saving the limited water resources, improving the ground temperature and water use efficiency, to achieve the purpose of saving water and increasing benefit. |
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