Precautions for fertilizing vegetables in protected areas

While applying the base fertilizer to the vegetable field, a large amount of topdressing should be carried out during the growth process, and the fertilization technique is one of the more common methods. It is recognized by the majority of farmers because of its convenient application, fast absorption and good fertilizer efficiency. However, pay attention to the following issues when applying: 1. Select fertilizers The class is correct. Different types of fertilizers are water-soluble and have different effects. When selecting, they should be selected according to the growth of vegetables, the degree of lack of fertilizer, and the characteristics of fertilizers. If the vegetable has symptoms of nitrogen deficiency, urea, ammonium nitrate, etc. may be used. Missing For nitrogen, phosphorus and potassium, potassium sulfate compound fertilizer can be used. 2 , the application method should be appropriate. ' When applying fertilization, the solid fertilizer should be dissolved into water in advance to form a mother liquor, which is then applied with water (the organic fertilizer should be applied when it is applied) Ret foam for the first 10 days, the supernatant was applied Debris). When I went to the countryside, I found that many farmersâ€™ friends directly sprinkle fertilizers and water them, causing uneven fertilization, local concentration is too high, and burning occurs. Elephant. 3 , the amount of fertilizer should not be too large, the concentration should not be too high. When using the fertilizer, the amount of fertilizer should be reasonably mastered. Too much concentration may cause excessive concentration and fat damage. If the application of urea is too much, it is easy to cause ammonia gas, nitrous acid gas poisoning, and too little shellfish. Not the purpose of top dressing. In general, when the normal watering water, the solid fertilizer can be administered in an amount of 120% of the amount of conventional ground applications fertilization (now on the market can be described into the dedicated fertilization OK ) . 4. Don't ignore climate factors. Temperature, light, frost, etc. all have an impact on the benefits of fertilizer use, and this should be taken into account when applying. If the temperature is low, it will affect the absorption and transportation of fertilizers by crops, and make vegetables. Growth is inhibited ? Delayed vegetable market. 5 , can not apply a single fertilizer. I found the countryside, farmers and friends look for a fertilizer, put it as a? Universal? Fertilizer, regular use of a single nutrient causes too More, the physiological disease caused by vegetables, the correct method is based on the different growth and development stages of vegetables, balanced fertilization, alternating application of various fertilizers.

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Socket Weld Flanges

Socket-Weld Flanges has a female socket in which pipe is fitted. Fillet welding is done from outside on the pipe. The socket welding flange is similar to a slip-on flange except it has a bore and a counterbore dimension.

The counterbore is slightly larger than the O.D. of the matching pipe, allowing the pipe to be inserted into the flange similar to a slip-on flange.

The diamter of the smaller bore is the same as the I.D. of the matchine pipe A restriction is built into the bottom of the bore which sets as a shoulder for the pipe to rest on.

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