Today is the twenty-first solar terms in the twenty-four solar terms, which marks the opening of the midwinter season. After the heavy snow festival, the weather will get colder and colder, and some areas will be affected by blizzards and smog. This is definitely good news for small partners who love snow, but it is a challenge for crop growers. . Therefore, when the temperature is low, the vegetables are subjected to freezing damage and cause losses. They need to prepare the corresponding crops to “anti-freezeâ€, and once the frost resistance fails, it is a fatal blow to them. Therefore, today's Xiaobian said that there are several winter vegetable anti-freezing measures for your reference.
First, the main points of antifreeze
The freezing damage of crops is generally due to the sub-health state of the crops, coupled with the low temperature attack, which causes the cell wall and cell membrane of the crop to rupture. Therefore, in the process of planting crops, it is necessary to timely supplement the nutrients needed for crop growth, so that the crops can grow stronger and stronger, increase the resistance to freezing damage, and make the crops quickly recover after being frozen.
Second, antifreeze measures
1. Strengthen the management of greenhouses
(1) In the cold and cold days, it is necessary to strengthen the cover management of the small arch shed in the greenhouse, use the thin bamboo rafts as the arch frame, cover the film at night, and then cover the film with a layer of grass mites.
(2) Covering the mulch in the shed can play the role of heat preservation and moisturizing. The bottom of the greenhouse is made of a plastic film as an apron to reduce the cold air at the bottom. It should be noted that it is necessary to block the gaps in the greenhouse and reduce the heat dissipation in the gap.
(3) It is used as a wind barrier in the north side of the greenhouse, and it is used to block wind and cold.
2, temporary heating
When the daytime temperature in the greenhouse is lower than 15 degrees and the nighttime temperature is lower than 5 degrees, it is prone to freezing damage or cold damage. Therefore, temporary warming measures should be taken at night to manually supplement the heat energy. The specific heating operation is: placing several coal ball furnaces in the greenhouse to improve the temperature inside the shed. It should be noted that when several coal ball furnaces are placed, the temperature in the shed can be increased. The greenhouse should be ventilated first, and then enter, and attention should be paid to prevent carbon dioxide poisoning.
3. Strengthen fertilizer and water management
(1) In the seedling stage of greenhouse vegetables, nitrogen fertilizer should not be applied. It can be sprayed 2-3 times with 0.2% potassium dihydrogen phosphate solution to resist cold.
(2) Selecting sunny days to apply warm fertilizers such as cow dung, pig manure, and compost in the rhizosphere of vegetables to increase the soil temperature to 2-3 degrees.
(3) Foliar spray fertilizer should be applied to the crops in the shed, which can not only supplement the nutrition of the plants, but also enhance the cold resistance of the crops. Foliar spray fertilizer is sprayed with 0.3% potassium dihydrogen phosphate plus 300 times white sugar solution (or brown sugar fermentation broth).
(4) Appropriate irrigation can increase the heat capacity and prevent the ground temperature from falling, but do not fill the water during the freezing period.
4, disease prevention
(1) Vegetables are susceptible to pests and diseases after being frozen. Therefore, it is necessary to spray bactericides such as chlorothalonil in time for prevention and treatment.
(2) Prevent the burning of smoked agents in the greenhouse and kill the bacteria in the shed.
5. Timely harvesting to reduce the damage caused by freezing damage
After the vegetables are frozen, they are harvested in time to reduce the damage caused by freezing damage.
1.High-quality nitrile blend gloves are unsterilized. They are with strong longitudinal tensil strenth(breaking strenth) and longitudinal elongation.
2.It's elastic and fits your hands tightly. Nitrile blend glove is 100% latex free.
3.During this special period, it can serve as a protective role to prevent from sticking to your hands.
4.You can use your phone when you wear are wearing them
5.Superier chemical resistance, acid resistance, alkali resistance and oil resistance.
6.Strong tensile strenth, punture resistance are not easy to be damaged.
7.Non-sterile, powder free
8.Allergic free
9. Size: S,M,L and XL
10.Color: normally Blue,black
Nitrile Blend Gloves,Blend Gloves,Vinyl Nitrile Blend Gloves,Vinyl Blend Gloves
Jiangsu Asbao Medical Technology Co., Ltd. , https://www.iigloves.com