Wind and snow weather in a timely manner The heavy storm and snow weather will cause short and heavy losses to the greenhouse vegetables. Therefore, it must be highly concerned and managed in a timely manner. Before windy, heavy snow or blizzard weather arrives, timely strengthen the shed and repair the shed film, watch and listen to the weather forecast every day. The mouth of the shed should be tightly sealed, and the shed film and grass reeds should be tightly closed and compacted; the film line and grass reeds should be renewed every year; Add 3-4 horizontal drawstrings. If there are no or few columns in the shed, increase the column bracket to increase the load in the shed. In order to facilitate the cleaning of snow on the shed, a two-layer film should be placed on the grasshopper. At the same time, when heavy snow or blizzard falls, the snow conditions should be observed at any time, and the snow on the shed should be cleared in time to prevent the shed from collapsing. Disclaimer: Some articles on this website are transferred from the Internet. If you have third party legal rights, please inform this website to deal with them. phone The whole trousers are revealing the feelings of youth and spring. Cartoon flowers give this Beach Shorts a spring vibe, very vigorous and uplifting. These beach shorts have three pockets which is designed to carry your belongings easily. This brings great convenience for your travel. This pair of men's beach shorts is the best choice for your trip! Polyester Beach Pants,Lovely Beach Shorts,Brown Beach Shorts,Mens Walking Beach Pants Xinhui Jielide Garment Factory , https://www.ntgfwear.com
Overcast and foggy weather In the winter, overcast and foggy weather is a relatively common bad weather. In continuous overcast weather, heat preservation and dehumidification is the management priority. If it is not necessary, do not water, fertilize, spray or prevent diseases and insect pests. When it is really necessary to use the above measures, under the guidance of technical staff and experienced vegetable farmers, avoid the weak growth period of vegetables caused by continuous cloudy mist, and use drip irrigation, micro-spray, sub-membrane furrow irrigation, fertilization, foliar fertilizer and aerosol. Agricultural and physical measures such as traps and traps, water and fertilizer management, and pest control. In cloudy and foggy days, pay attention to increasing astigmatism. Every day at noon, the grasshopper is opened when the temperature is high. If there is a power supply, you can use 40W plant fill light, plant growth light or 120W greenhouse special fill light. Or ordinary fluorescent lamp for fill light.
Set up cold-proof trenches for low-temperature and cold science tubes. Dig 30-cm-wide and 50-cm-deep cold-proof trenches in front of the shed, and fill it with straw, leaves, or weeds to increase the shed temperature by 3 ° C. Adding a reflective curtain, leaving the shed wall on the north side of the shed to add a reflective curtain can increase the shed temperature by 2 ° C, increase the light intensity by 20% -30%, and increase the ground temperature by about 1 ° C. Use fertilizer water scientifically. Do not fertilize when the temperature in the shed is lower than 8 ℃. If the fertilization is needed, spray 0.3% potassium dihydrogen phosphate, 0.3% calcium nitrate, 1% -2% of the fertilization or Compound fertilizer filtrate, or 1% glucose solution. Set up a heating furnace or a stove outside the shed, when the temperature is lower than 6 ℃, you should use straw, firewood, coal, etc. in time to increase the temperature, but the smoke must be discharged outside the shed. If there is a power supply condition, you can also use an electric heater to increase the temperature to help the vegetables in the greenhouse to pass the period of adverse weather conditions and quickly resume production.
When the temperature suddenly rises and falls sharply, when the cloudy and sunny weather suddenly clears, don't pull the grass straight away. Instead, pull half of the grass, cover half of the grass, or every other day. This will continuously adapt the vegetables in the greenhouse for three consecutive days Change to prevent rapid high temperature and direct sunlight in the shed, causing a large amount of water to transpiration in the shed. When the temperature drops suddenly and sharply, pull the grasshopper late and cover the grasshopper early, and extend the coverage time to accumulate the temperature in the shed and reduce the loss of shed temperature. At the same time, when the temperature changes suddenly, do not water, fertilize and spray to prevent diseases and insects, so as to avoid cooling and hurting the roots, causing dead seedlings and aggravating the occurrence of diseases and insect pests.