At the beginning of the new year, the climate is changeable. It is necessary to seriously strengthen the management of potato seedlings, promote early emergence of seedlings, produce strong seedlings, and produce more seedlings, and prepare seedlings for early sweet potato.
First, cut off the top buds When the temperature rises above 12 °C in the early spring, it is necessary to cut off the top buds of the old vines in time, leaving the base about 3 cm to promote the base sprouts to grow faster.
Second, do a good job of cultivating alfalfa in the grass must be timely cultivating weeds, loosening the seedlings, promoting the early opening of new roots in the lower part of the ground, early growth of new leaves in the ground; at the same time, by removing weeds, cleaning the seedlings, it is beneficial to the growth of potato seedlings.
Third, timely topdressing and topdressing should be early, should apply more phosphorus, potassium fertilizer, combined with the application of nitrogen fertilizer, to promote the growth of potato seedlings. Generally, 1500-2000 kg of manure per mus, or 1000-1500 kg of livestock manure, 1000-1200 kg of human excrement and 15 kg of compound fertilizer. Before emergence, topdressing once every 3-5 days, 800-1000 kg per mu of manure is mixed with double water application; after emergence, each time the seedlings are applied once a thin fertilizer (human excrement and water doping), such as To accelerate the growth of potato seedlings, add 100-200 g of ammonium sulphate per 100 kg of rare manure or 50-100 g of urea, but do not apply fertilizer separately, so as to avoid the slender and weak potato seedlings, it is not easy to survive after plugging, and the potato is not ideal. After the first fertilization, the plant ash or fired soil should be applied once to supplement the phosphorus and potassium needs of the potato seedlings. At the same time, we must do a good job in pest control.
Fourth, strengthen the water pipes, anti-frost and less rain in the early spring, to irrigation or drought, or to use watering buckets to keep the soil moist, improve the humidity of the seedlings, and facilitate the growth of potato seedlings. In the spring rain season, we must do drainage and drainage, prevent stagnant water, increase soil oxygen, promote rapid growth of potato seedlings, and change temperature in early spring. It is necessary to prevent low temperature frost. In case of low temperature frost, it is necessary to cover straw or plastic in time. The film protects the normal growth of potato seedlings.
5. For the nursery land covered by plastic film, it is necessary to flexibly manage the potato seedlings according to climate change. The film temperature is higher at noon on sunny days. The two ends of the film should be opened for ventilation and refining, avoiding high temperature burning, and the rainy days are difficult to root. Evergreen, we must cover the mulch at the top of the cover to prevent the cold and cold seedlings and frost and dead seedlings. In addition, the potato seedlings should also be well protected against livestock and poultry damage. (Cold Dan)
There are many kinds of protective gloves. In addition to chemical resistance, there are also anti-cutting, electrical insulation, waterproof, cold resistance, thermal radiation protection, fire retardant and other functions. It should be noted that the general acid and alkali resistant gloves are not the same as the chemical resistant protective gloves. So when needed, you should choose protective gloves that prevent all kinds of chemicals from penetrating.
The correct use of
1. Check whether the gloves are damaged before each use
2. Wear protective gloves before handling harmful substances or operating dangerous procedures
3. Avoid exposure of pollutants and contact with the skin after removing the contaminated gloves
4. Contaminated gloves should be wrapped before being discarded
5. Reuse protective gloves should be thoroughly cleaned and air-dried after use
6. Choose gloves of the right size
Maintenance method
1. Put protective gloves in a dry, dark and constant temperature environment
2. When there are a large number of chemical substances remaining, use appropriate solvent to clean, but avoid using corrosive cleaning fluid
3. Dry the gloves thoroughly after washing. Do not use heat to dry the gloves unless instructed by the manufacturer, as it will age the gloves quickly
Proper use and maintenance can properly increase the service life of protective gloves.
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