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Tangshan, China

Jing F.,Beijing Forestry University | Zhu J.,Beijing Forestry University | Zheng B.,Municipal Utilities | Lu X.,Municipal Utilities | And 2 more authors.
Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering | Year: 2011

In order to investigate the application effect of hole-base padded film afforestation model(New) in coastal argillaceous saline-alkali land. the survival rate and growth of Morus alba L., the soil moisture and conductivity in and out afforestation hole in New model, contrastive I and II afforestation model(ConI and ConII) were analyzed. The results showed that the soil salt content in platform field was excluded year by year through platform field preparation. There was a close inverse relationship between the water and salt content. The soil moisture in New model raised 16% than ConI model and 4% than ConII model. The soil conductivity in New model and ConII model decreased by 76% and 73% than Con Imodel which without film. The seedling survival rates, height and canopy area using the New model increased by an average of 29%, 70% and 30% than ConI model. Compared with the ConII model, those values were higher by an average of 11%, 9% and 7%. The seedling root using film was distributed more in the soil shallow layer which the salt content is lower than those in deep layer. These results show that New model can prevent the infiltration of salt, reduce the evaporation, improve the seedling survival rate and growth as well as promote shallow root growth. The New model along with the platform field preparation could provide a good environment and will be great prospect for the coastal argillaceous saline-alkali land. Source


News Article | November 9, 2015
Site: http://www.renewableenergyworld.com

A new study by Complete Solar is shedding light on how much money California solar customers are losing to lengthy grid interconnection approval delays caused by utilities. According to the study, Permission to Operate (PTO) delays are costing the average residential solar customer in California $4.02 per day – adding up to a grand total in excess of $4.7 million over the last four years. Data for the study was gathered from 1500 residential solar installations throughout the state and tracked from 2010 to 2015. The study ranks California utilities based on their average speed of interconnection approval. It found the Sacramento Municipal Utilities Department was the only utility with zero wait time, frequently issuing same-day interconnection approvals. Palo Alto Utility came in a close second, taking on average one day. Alameda Municipal Power, which ranked third in the study, averaged a total of 11 days.

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