Application Effect Analysis and Development of the Rainwater-collecting Products in Arid Mountains
Aiming at solving the problem of low afforestation survival caused by uneven rainwater distribution in north China,a new type of rainwater collecting systems,suitable application in arid mountain was designed.The rainwater-collecting system was composed of runoff surface,sedimentation tank,transporting pool and rain-collecting pool.To collect much rainwater,an aqueduct was used to connect the rain-collecting pool.Rain was collected in wet season and it was used for irrigation in low flow season.Connection type of rain-collecting pool was characteristic of the abundant rain-collecting,longer service life,and easily construction.The total cost of three rain-collecting pools which one pool can collect for 50 m3,a corresponding rain-collecting yard was about 14 776.49 yuan.The total rain-collecting water amount was 150 m3,which was used to irrigate Lonicera japonica Thunb.and Platycladus orientalis.The results showed that four liter of rain water was used each time,with four times every year.Under the same stand conditions,survival rate of afforestation was raised by 12.7%,the preservation rate of the second year was increased above 41.3%,as well as the dry matter accumulation of Chinese arborvitae was increased by 64.2%.In Longting,Xintai,Shandong,three rain-collecting pools were built and rain was used for irrigation to sweet cherry,which resulting to an economic income of ten thousand yuan.In conclusion,rain-collecting system was beneficent to the rainwater collection,low afforestation survival in arid mountains,as well as the fully utilization of arid mountains,and the people's economic income.
国家科技期刊平台
NSTL
万方数据
维普
