Sprinkler irrigation and micro-irrigation automatic control equipment With the development of economy, water resources, energy shortage and labor cost increase, more and more water-saving irrigation systems will adopt automatic control. This article focuses on the advantages and classification of automated irrigation. Irrigation System Degree Irrigation Nozzle,Irrigation for Agriculture,Impact Drive Sprinkler,Plastic Drip Irrigation Fittings JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , http://www.spgreenhouse.com
For the transport of Astragalus, commonly used methods include water transport and wet transport.
(1) Transport with water: Commonly used transport tools include wooden barrels, canvas bags, and water tanks. First add water and refill it. The dress density should not be too large. Each 50 kg volume of the barrel (cylinder) contains 20 kg of water and 20 kg of astragalus. At the same time, some mud shall be put into the container to make it move around the container to promote the activity of the carp and increase the oxygen in the container. Above the container, a net cover is added for ventilation and to prevent the catfish from jumping out. When the weather is hot, place the prepared ice cubes on the net cover to make the melted ice water drip into the water gradually and gradually reduce the temperature. Do not put ice cubes directly into the water. Dying to death. If it is found during transportation that the head of Astragalus droops, the body floats on the surface of the water, and the mouth spits foam, which means that the water quality of the container deteriorates, and the new water should be completely replaced immediately. With water transport for a longer period of time, the survival rate is generally above 90%.
(2) Moisture transport: Since squid can directly breathe air, as long as the skin is kept moist, it can survive for a long time after leaving the water. Using this feature, if the number of carp is small (more than 1,000 kilograms) and the transit time does not exceed 24 hours, this method can be adopted for transport. The method is to use wooden boxes, sieves, wooden barrels, bamboo baskets, etc. as packaging containers. The bottom is covered with a layer of wet grass or wet Pu bag to prevent the carcass from being rubbed and wounded. Wash the squid with clean water and place it in a container. Do not install more salmon to prevent suffocation and death. When using wooden boxes, casks, and dill baskets, holes must be drilled around the lids for ventilation. Spray water every 2-3 hours during transportation to keep the skin moist and avoid direct sunlight. During summer transportation, it is also necessary to pay attention to cooling. Frequently sprinkle some cool water on the squid body or put ice on the lid and lid. This transportation method is easy to handle and can prevent the squid from being squeezed, and the survival rate can reach more than 90%.
The advantages are as follows:
(1) It is possible to truly control the amount of irrigation, irrigation time and irrigation cycle in a timely and appropriate manner, thereby increasing crop yield and significantly improving water utilization.
(2) Saving labor and operating expenses.
(3) The work plan can be arranged conveniently and flexibly, and the management personnel do not have to go to the field at night or other inconvenient time.
(4) Since it can increase the effective working time every day, the initial capital investment in pipelines, pumping stations, etc. can be reduced accordingly.
classification:
First, fully automated Irrigation System
The fully automated irrigation system does not require direct human involvement. The pre-programmed control procedures and certain parameters that reflect the water requirements of the crop can automatically open and close the pump for a long time and automatically irrigate in a certain order. The role of the person is simply to adjust the control program and overhaul the control equipment. In this system, in addition to emitters (heads, drip heads, etc.), pipes, fittings, pumps, and motors, it also includes central controllers, automatic valves, sensors (soil moisture sensors, temperature sensors, pressure sensors, water level sensors, and rain sensors). Etc.) and wires.
Second, semi-automatic irrigation system
In the semi-automated irrigation system, no sensors are installed in the field. The irrigation time, irrigation volume and irrigation period are controlled according to pre-programmed procedures, rather than feedback based on crop and soil moisture and meteorological conditions. The degree of automation of such systems is very different. For example, some pump stations implement automatic control, and some pump stations use manual control. Some central controllers are only one timer with simple programming function, and some systems have no central control. The controller, but only some of the sequential switching valves or volume valves are installed on each branch pipe.
Automated irrigation is the trend of the times. In the future water-saving irrigation projects, more and more automated irrigation systems will be applied.
The captured yellow cockroach can be placed in water tanks, casks or small concrete tanks. Do not place it in containers that have been washed in dirty containers. The newly caught yellow cockroach, with mud and sand in the fish body and mouth, must constantly change the water. The water to be changed should be the same as the water quality of Dianchi Lake. If the storage time exceeds 1 day, change the water once a day. In order to prevent “burningâ€, generally turn the jaundice once every 3 hours to turn up the bottom jaundice. When the jaundice is about to die, a large amount of mucus on the body surface will fall off, causing the water to become sticky. At this time, you must not change the water again, otherwise it will accelerate the death of the jaundice. If the squid is de-sticky, if it is not immediately slaughtered, its head will swell and it will die. Secondly, attention should be paid to the cover or net cover with air holes in the cylinder mouth to prevent jaundice from jumping out. If 3 to 5 muddy louses are placed in each cylinder, using them to move up and down, it is possible to avoid intertwining the jaundice, increase the activity of the jaundice, and increase the survival rate of the animals.