Development and Application of Multifunctional Devices of Irrigation and Fertilizer Quota

The low plain area of Hebei Province is a semi-arid region,the groundwater resource is extremely scarce,the development of water-saving agriculture is of great urgency. Development of multifunctional devices of quota irrigation is a set of water-saving irrigation,fertilizer,spray and other functions in one device,which is convenient,time-saving and labor-saving.