Studies on Micro-Sprinkling Irrigation Technique for Panax Quinquefolium L.

The comparisons of hydraulics function and economic and technique efficiency in five different microsprinkling irrigation systems for Panax Quinquefolium L were made. The advantage and disadvantage of each system were analyzed and the cost invested were evaluated, to provide a basis for various users in different conditions to select appropriate microsprinkling irrigation systems.The seedling survival, growth and yield of Panax Quinquefolium L. were observed and analysed related to the technique of microsprinkling irrigation and the time of beginning to irrigate under different negative pressure read from soil humidometer. The irrigation index of the optimum value of negative pressure of soil humidometer which can be used to instruct irrigation schedule was obtained. These results would provide scientific data for proper irrigation and automation of microirrigation for Panax Quinquefolium L.