The drip irrigation fertilization technique combines fertilization and irrigation and fertilizes the drip irrigation equipment. The application of automated drip fertilization on litchi varieties such as blackleaf, gardenia, glutinous rice, cinnamon and Huaizhi can significantly increase the litchi yield, increase the proportion of large fruit, ensure the high yield and stable yield of litchi, and significantly save labor, fertilizer and water, and input and output. The ratio is 1:8.2.
Good irrigation facilities are important measures for maintaining high yields and stable production in modern orchard management. Irrigation not only solves the need for orchard water, but also provides necessary conditions for a new and efficient fertilization method. This new fertilization method is called “microfertigationâ€. Drip irrigation and micro-spray irrigation are collectively referred to as micro-irrigation. Fertilization by micro-irrigation is an agricultural measure that combines irrigation with fertilization, ie, fertilization through irrigation equipment. Micro-irrigation can be used not only with fertilization but also with pesticides, herbicides, and soil disinfectants. Fertigation techniques developed rapidly in the 1970s and are widely used in the United States, Australia, Mexico, New Zealand, Israel, the United Kingdom, and France.
The application of micro-irrigation fertilization technology can accurately and uniformly apply fertilizer according to the characteristics of nutrient requirements at different stages of plant growth and development. Because the fertilizer is applied only in the area where the root system grows and is dissolved in water, it is easy to absorb, thus greatly improving the fertilizer utilization rate. Cultivation of tomato under drip irrigation in the field, nitrogen utilization rate of up to 90%, phosphorus utilization rate of 70%, potassium utilization rate of 95%. Under drip irrigation, water droplets containing nutrients slowly infiltrate into the soil and stop irrigation immediately after the soil moisture in the root zone is saturated. This can reduce the leakage of nutrients into deep soil, especially reducing the loss of nitrate nitrogen; for crops that require frequent fertilization and Bananas, etc., can greatly save the time and labor of fertilizing. At the same time, because crops have been growing under conditions of balanced moisture and nutrients, the yield and quality of crops have been reliably guaranteed.
At present, litchi is mainly planted on barren slopes and river heads, and soil nutrients are generally poor and unbalanced. There are currently 200,000 hectares of litchi in our province, but most of them have no irrigation conditions. The supply of water and nutrients has become a limiting factor in increasing litchi yield. The application of drip irrigation in litchi orchards can provide timely and appropriate fertilization and water supply according to the growth characteristics of litchi and soil nutrient status, and provide guarantees for fruit development and timely promotion of new shoots. To promote this new technology in orchards in southern China, we conducted a trial at Xiliguo Field, Nanshan District, Shenzhen.
Dental chairs are one of the most widely used products in the dental field.The dental chair is used for inspection and treatment of oral surgery and oral diseases. Electric dental chairs are mostly used. The main structure is divided into 8 parts (Figure 1). The bottom plate of the whole machine is fixed on the ground, and the bottom plate is connected to the upper part of the dental chair through a bracket. The movement of the dental chair is controlled by the back of the chair. The working principle of the control switch is: the control switch starts the operation of the motor and drives the transmission mechanism to move the corresponding parts of the dental chair. According to the needs of treatment, by manipulating the control switch button, the dental chair can complete the movements of ascending, descending, pitching, tilting posture and resetting.
Dental Chair,Best Dental Chair,Dental Chair Price,Portable Dental Chair
Hebi Tianchi Trading Co., Ltd , https://www.hebitianchi.com