Plastic film in the late period of premature aging
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
First, timely supplement fertilizer. When the watermelon grows to the size of an egg, Mu recovers 40 kg of urea and 5 kg of potassium dihydrogen phosphate. According to the growth of the plant, fertilizer may be applied once or sprayed 2-3 times, and a mixture of urea and potassium dihydrogen phosphate may be used, or sprayed with pomposity, foliar and so on.
Second, do not leave the first melon. The first melon is removed immediately after sitting, and the second melon is left. The sub-grapes do not allow them to produce melons, which can effectively prevent premature aging.
Third, guarantee the public opinion. Water in the morning and evening when temperatures are low. To prevent loss, cover the roots of the plants with grass. After sitting on the melon, the virtual soil under the film around the plant is pressed down by hand to form a small basin. When it rains, it can make the rain seep through the pellicle hole at the base of the plant to the root of the watermelon. In addition can also be sprayed with high-efficiency drought-resistant agents, water-retaining agents.
Fourth, early prevention of disease. Adopting the principle of “preventing stress over treatment†and “treating early, treating smallness, and treating the diseaseâ€, according to the actual conditions of the local morbidity and vulnerability of local watermelons, various pesticides can be targetedly sprayed before or at the onset of the disease. For watermelon anthrax, spray 50% carbendazim WP 500 times, or 50% anthraquinone WP WP 300-400 times. For watermelon wilt disease, 50% carbendazim or 70% thiophanate-methyl chloride 1.3 kg can be used to create a 1:50-fold medicinal soil, which is applied to the soil before planting. In the early stage of disease, 70% of the enemy can be used to irrigate the roots of 800-1000 times, 250 ml per plant, or use 10 grams of the enemy's original powder to mix in 200 grams of flour, add water to make a paste, and apply it to the base of the plant. Or irrigate the roots with either antibiotics or double action. For watermelon virus disease, it can be sprayed with 10% once-off (imidacloprid) 2500 times to kill the virus-borne aphids and spurts. In the early stage of the disease, a mixture of 500 times the virus and 800 times the enemy of the yellow leaf was sprayed, once every 5-7 days, and sprayed 2-3 times.
Fifth, prevent day burns. Can be used to cover the surface of watermelon leaves, weeds, etc. to prevent burning.
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.