Drip irrigation in greenhouses has many advantages, such as reducing humidity, increasing ground temperature, saving water, saving labor, increasing efficiency, and increasing production. However, in the drip irrigation of greenhouses, there are often problems such as damage of the emitter, plugging of the drip holes, poor uniformity of the outlet water, and low flow rate. In order to avoid the above problems, users should pay attention to the following points: Choosing the right drip irrigation machine: 1 Select the appropriate water pump by calculation or according to design requirements; design a reasonable water supply pipe diameter and pipe length through calculation to achieve higher uniformity; water supply pipe should be selected plastic with anti-aging properties Pipe. 2 The emitter is a key component. It is necessary to choose an emitter that is uniform in water, strong in anti-clogging ability, and easy to install and use. 8 The selected filter should be 120 days or 150 days, and it has the advantages of corrosion resistance and easy flushing. 2. Correct installation of drip irrigation machinery: (1) The installation of water supply pipelines should adopt a bidirectional water separation method and strive to balance the two sides. 2 In the installation process of the first hub, one pressure gauge and one valve must be installed before and after the filter. The purpose is to observe the pressure difference before and after the filter and to adjust the flow and pressure, and to facilitate the filter cleaning. 3. Use drip irrigation machinery correctly. 1 To control the system pressure, the system working pressure should be controlled within the specified standard range. 2 The filter is a key component to ensure the normal operation of the system. It should be cleaned frequently. If the filter is found to be damaged, it must be replaced in time. 3 The emitter is easy to damage, should be laid carefully, carefully managed, gently rolled up when not in use, and should not be pressed or dragged on the ground. 4 Strengthen management to prevent debris from entering the emitter or the water supply pipe. If any debris is found, the plug should be opened and flushed. When the temperature in the winter greenhouse is too low, appropriate measures must be taken to prevent the frozen plastic parts, the water supply pipes and the emitters. 6 When drip irrigation, slowly open the valve and gradually increase the flow to drain the air, reduce the impact pressure on the emitter, and extend its service life.
That year, hot strips were popular. Once teachers came in, they could ask about the taste of hot strips. For some reason, they felt good when they smelled it. It was like a bag. So slowly fell in love with the taste of hot strips, after a semester of eating irremediable, even in the morning when I eat breakfast, I will add a package of hot strips in the big cake, bite, oil slowly left, but also very consciously stretched out the tongue to lick, the heart is still delicious that how can there be such a delicious food ah! So unconsciously eating for a semester, after coming home from vacation, I found that my face had begun to grow acne. At first, I had not noticed it. First, I grew up on my forehead, then on both sides of my cheeks. I slowly dared not look in the mirror, and finally I dared not go out. Later, the family worried about my face, all kinds of prescriptions, all kinds of hospital medicine I almost vomited, the hospital inspection said that too much junk food to eat "poisoning" too deep, must be slowly recuperated, and then a woman doctor in the hospital let me go home to drink 2 cups of medlar soaked water every day, so as to invigorate Qi and blood, but also to prevent the skin from becoming more serious too fast. So slowly drank a holiday, slowly much better, and vowed never to eat hot strips again. Later, it was found that Lycium barbarum could improve skin aging, which was mainly caused by free radical oxidation. Lycium barbarum polysaccharide and B carotene contained in Lycium barbarum were potent antioxidants, together with the synergistic effect of selenium and vitamin E, Lycium barbarum formed a powerful antioxidant force. In addition, vitamin A could maintain the growth and composition of epithelial tissue. It can prevent dry skin and keratosis of hair follicles, thus playing the role of beauty, nourishing the skin. Since then, I can not do without medlar water, and gradually formed a habit.
Goji Berry
Goji Berry Fiyat,Goji Berry,Organic Goji,Goji Berry Tea
Lixian Spring Pharmaceutical Co., Ltd. , http://www.lxctyy.com