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. Degree Irrigation Nozzle,Irrigation for Agriculture,Impact Drive Sprinkler,Plastic Drip Irrigation Fittings JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.engreenhouse.com
In aquaculture, feed costs account for more than 60% of the cost of aquaculture. Reducing feed costs is the key to increasing the benefits of fish farming. The application of photosynthetic bacteria to produce crop straw (such as wheat straw, rice straw, corn stalks, peanut shells, etc.) into fish bio-feed, not only raises the effect of breeding significantly, but also significantly reduces feed costs.
Homogeneous bacteria can produce a variety of growth promoting factors, promoting immune factors, and coenzyme Q to promote the growth and development of larvae. They have the following effects in aquaculture: (1) Large and medium-sized reduction in the content of toxic and harmful substances in water, eliminating " "The dead fish" phenomenon; (2) Increase the oxygen content of the water body and reduce and eliminate the "floating head" phenomenon of the fish: (3) Reduce the time for opening the aerator, reduce the water change time, save electricity, and save labor; the production itself is significantly reduced; ( 4) The survival rate of juveniles, juveniles, and adult shrimps is significantly improved; (5) Elimination of skin diseases caused by bacteria in fishes and shrimps makes the appearance of fishes and shrimps robust; (6) Significantly increase the food intake of fish and increase weight rapidly, thereby increasing Yield.
The use of crop stalks for the production of fish bio-feeds has higher nutrient content than corn and has comprehensive nutrition, and due to its large volume and small specific gravity, the suspension time in small and medium-sized fish is about 1 hour, which is an ideal feed for fish and shrimp.
The application of photosynthetic bacteria to produce high-efficiency fish biofeeds using crop straws is as follows:
(a) crush crop straw;
(b) Put the straw powder into the fermentation tank, add straw powder weight 80% water, 1% glucoamylase, 1% compound enzyme, 0.5% live yeast, 1% sodium chloride. 0.5 lactic acid, stir well;
(3) Access to 3% photosynthetic bacteria, cultured at 15°C to 35°C for 2 days, and the material layer is covered with white hyphae to produce fragrance. This results in highly efficient fish biological feed, which can be made into pellets for drying and storage.
Efficient fish biological feed contains rich amino acids and trace elements, rich in B group vitamins, folic acid, coenzyme Q and other antiviral substances, biological active substances and various immune growth factor, fish and shrimp can increase resistance after eating Ability to promote disease. Its nutrient composition, after testing showed that: containing crude protein 12.31%, crude fat 4.20%, crude fiber 19.24%, of which the content of the three main amino acids: 0.68% lysine, methionine 0.16%, cystinic acid 0.19% .
The use of high-efficiency fish biofeeds for feeding fish and shrimp has the advantages of high survival rate, less disease, less water change, high yield, and low cost. The specific effects are as follows: (1) The hatching rate of fertilized eggs of fish and shrimp can be increased by about 20%; (2) The prevention and treatment of fish and shrimp disease can increase the survival rate by 20% to 40%; (3) The appearance of fish and shrimp is robust, and the meat is particularly good. , And can increase the production of 20% to 30%; (4) can reduce the time to open the aerator, two-thirds, reduce production costs; (5) the crop straw become a treasure, the feed cost is reduced by about 60%.
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.
Method for producing efficient fish biological feed
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