The simulation results showed that the alternate pumping and injection mode was not applicable to this groundwater source heat pump system when the regional groundwater flow existed.

Simulation of soil water dynamics under alternately partial root-zone drip irrigation for grape roots;

【Method】Effects of partial root zone alternative irrigation on growth and leaf physiological characteristics of three-year old roots of potted Gala apple trees were investigated in this study.

The results showed that intercropping combined with alternative irrigation significantly increased the yield of wheat compared to the sole cropping with flood irrigated wheat,it was increased by 20.

Laboratory experiment on the redistribution of soil salinity under saline and fresh water alternate irrigation;

Controlled alternate irrigation is a new method for saving water.

This paper study the distribution of NO~-_3-N in the rhizosphere soil of maize under controlled root divided normal irrigation,controlled root divided alternate irrigation and fixed irrigation.

Effects of roots divided alternate irrigation on nutrient uptake were studied with controlled alternate irrigation (CAI) for half part of root zone, controlled fixed irrigation (CFI) for half part of root zone and conventional irrigation (CI) for whole root zone.