| Fruit trees are the main economic crops in arid and semiarid areas in north China,its water consumption occupies an important share in agricultural water,carry out research on the laws of the apple orchard soil water consumption,the apple orchard moisture to implement scientific management,reasonable to the irrigation is a important means to improve the fruit trees yield potential,to realize the sustainable development of fruit industry area,ease tensions in the region of the contradiction between supply and demand of water resources,improve the soil water environment,improving irrigation water use efficiency,improve soil using dry layer is of great significance.In this paper,two years in a row of red Fuji apple in the irrigation area of village were soil moisture,the trunk flow state monitoring,the trunk flow under different weather conditions and the analysis on the dynamic change of soil moisture,and apple root zone for small scale water root distribution and residual distribution of correlation analysis,mainly the following results:(1)apple’s fluid flow rate is not zero at night,and it maintains a certain even higher flow rate,and the main driving factors for the night and day flow are not the same.(2)for daytime and nighttime between flow rate and meteorological factors on the correlation analysis and multiple linear regression fitting,fitting and correlation does not match,flow rate and is not a simple linear relationship between various meteorological factors.(3)under the condition of border irrigation,leading the moisture is higher than the trees,tree root distribution between higher than row,root system distribution for the correlation of four factors in rank order:>total nitrogen>star points nitrate nitrogen>moisture.(4)points to the root of the average distribution is the overall were positively correlated,the soil particle size,larger root system distribution is relatively dense,soil particle size is larger,higher porosity,more suitable for the growth and development of root system.(5)the annual water consumption of apple in the zun huang-huang irrigation district is about 710mm,and it needs to be filled with four water,respectively,in late march,June,July and late August. |
