Abstract:

Abstract: In order to study the water consumption characteristics of pear in different soil moisture conditions and different seasons, Using potted cultural Huangguan Pear of four-year old as the experiment materials, water consumption of different soil water status pear [Pyrus bretschneidery Rehd] was studied by weighting method. The correlation coefficient between the consumption amount and the climatic element and area of leaf was analysed. The results showed that adequate soil water treatment was significantly higher than moderate and severe drought treatment in water consumption. The water consumption during the canopy formation is small (0.25-0.58L/day). Early June is the biggest (10.1L/ten days) among every ten days. The summit in a day is at 10:00-14:00. With the decline in soil moisture, photosynthetic rate of pear was significantly lower in the mid growing season of pear, other factors were not significantly different. The regression analysis results showed that average air temperature is the biggest influence factor. There are distinguished positive correlation between the water consumption and average air temperature (p=0.0075), wind speed (P=0.0135), leaf area on pear(r=0.9516), distinguished negative correlation between the water consumption and air humidity (P=0.0462). it is suggested that development phase of pear, soil water, leaf area, air temperature, air humidity and wind speed are the bases to make the consumption water model of pear.