1 anti-high temperature hazard
At high temperatures, such as lettuce, celery germination difficult, the seeds can be soaked for 8 hours, wrapped in wet gauze in the well or cold place to germination, or low temperature treatment, celery is 2 ° C - 5 ° C 48 hours, lettuce 5 ° C 72 In hours, it can promote germination and increase the germination rate. It can also sprinkle some short straw or straw on the seedbed, or cover the seedbed with a shade net, or cover the shade, cover the old film and bamboo curtain.
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2 anti-storm damage
Summer torrential rain makes the soil compact, which is not conducive to seed germination and unearthing. The following measures should be taken: one is to choose a high-dry land to build a seedbed; the other is to choose a sandy loam for easy rainstorm; the third is to drain the seedbed; the fourth is after sowing In case of heavy rain, the seeds are not unearthed, and after the rain, they are ploughed on the seedbed to prevent the soil from knotting.
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3 drought prevention hazards
The following measures should be taken: planting the foot water in the seedbed and sowing; or fully watering, then planting the soil, planting the soil, and sowing after planting the soil; watering the seedbed in the morning or evening; Seedlings, after the first hole is broadcast, the soil is not covered. When the second hole is dug, the wet soil dug out will be used as the cover of the first hole.
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4 anti-mite seedlings
Breeding in high temperature season, it is easy to grow, it is necessary to take the following measures to prevent: watering with watering can in the morning and evening, timely seedlings or seedlings; such as cucumber, tomato can be sprayed with ethephon to control the growth of seedlings, tomato in the 5 leaves, 7 leaves with 40% - 50% Chlormequat 1000 times the spray 1, can seedlings thick, dark green leaves, trailing blade increases, promote differentiation.
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Steel poles are commonly used to carry several types of electric power lines, distribution lines and lighting system. Distribution lines carry power from local substations to customers. They generally carry voltages from 4.6 to 33kV for distances up to 30 miles, and include transformers to step the voltage down from the primary voltage to the lower secondary voltage used by the customer. A service drop carries this lower voltage to the customer's premises.
Telecommunication Mast, Telecommunication Antenna Mast,Telescopic Telecommunication Mast,Signal Telecommunication Mast
Yixing Steel Pole International Trading Co., Ltd , https://www.yx-steelpole.com