Grass planting base of Qinghai Academy of Animal and Veterinary（2011）
Project Introduction:
In order to let the grass in the sample grassland have same growth speed, we did a test in the irrigation area and comparison area from 26th June to 16th Sep in 2011. The test is to measure the grassland community structure, the biomass on the surface earth, underground plant quantity, soil solid degrees and soil water content. The test adopts single factor treatment (harvest period) with randomized field design, plot area is 1 x 1m2 with 5cm stubble height and 5 times repeat.
In this project, tiled micro-sprinkling hoses are adopted. Detailed capability parameters are showed in below table. According to the well depth and pump specification, the well outlet pressure is 0.7Mpa, the sprinkler hose in this project designs for 0.1Mpa with 2m spraying radius. According to the calculation, 7 lines of sprinkler hoses are used for irrigation simultaneously. As this project utilizes solar pumping system, considered the variation of sun radiation intensity in a day, 4 lines of sprinkler hoses set as a group to irrigate simultaneously, sum up as 50 groups.
The natural pasture gross irrigating quota is 70 m3/Mu, Four lines of sprinkler hoses can irrigate 1.2 Mu areas. According to the performance parameter table of sprinkler hose, water flow for 100m sprinkler hose is 10-13 m3/h, in this project; it is designed for 10 m3/h, and irrigates 1.2Mu areas with 43.6hours, 300hours needed to irrigates the whole 100Mu experiment areas.
Solution:
Utilizes Solartech PS370-2 system, consisting of 3600W solar array, PB750L solar pump inverter and 2kw motor power, the total lift is 40m with 8m3 water flow per hour.
257
2011-06-11
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