Analysis on the Driving Factors and Countermeasures of the Changes of Apple Production Distribution in the Loess Plateau

Abstract

The development of apple industry is affected by climate, market environment, infrastructure, production technology, policy and other factors, which affect the increase and decrease of fruit growers' planting area. Therefore, on the basis of previous studies, this paper sums up the driving factors affecting the changes of apple industry distribution in the Loess Plateau into three aspects: natural factors, socio-economic factors and production technology factors, and analyzes the factors of apple industry changes from multiple angles. And put forward the corresponding countermeasures and suggestions from the perspectives of government, social enterprises and farmers.

Review of Classification and Prevention of Subgrade Defects

“…Scientific and reasonable design is the basis for guaranteeing the quality and safety of subgrade, therefore, the influence of various factors on subgrade should be considered when designing, so as to make preparations for dealing with various defects. First of all, geological exploration should be in-depth and detailed, and accordingly select a reasonable line, avoiding the dangerous, safety hazards of the section; secondly, according to the site conditions to determine the appropriate subgrade filler, for example: loess subgrade filler can be old loess, can also be used for the new loess, if the conditions allow, priority should be given to the new loess, but can't be mixed, and can even be used to other filler for the replacement of filler [31] ; slope and slope shape of the Design also has a crucial impact, in the design, should consider a variety of factors, determine a reasonable slope and slope shape, in order to ensure the stability of the slope at the same time, reduce the impact of rainfall scour [32]; necessary slope protection is also the focus of the design, in the design can be considered using grass planting, smearing, hammering surface, slurry piece of slope protection, grille protection and hanging network spray anchors, and other means of improving the stability and scour resistance of the slope [33,34]. The design can consider adopting the means of planting grass, hammering surface, slurry masonry sheet protection, grid protection and hanging net spraying anchors to improve the stability and scour resistance of slopes.…”