In February, the two solar terms of “Establish Spring†and “Rainwater†entered immediately, but there was still low temperature and low temperature, frequent cold waves, and crops were prone to frost damage. Wheat should be strengthened to prevent cold and stain, supplemented by fertilizers, etc.; vegetables should be timely planted and cultivate strong seedlings; fruit trees to do antifreeze and graft work, but also to strengthen the prevention and control of pests and diseases.
Special Note: When visiting relatives and friends during the Spring Festival, we must not forget that we must have a special person to “look at the greenhouse on the third day†and pay attention to preventing the fireworks from lighting the straw curtain.
wheat
1. Clear trenches to ensure the open channels. For the current wheat field has not yet established a ditch to be ditched in time, has been open ditch but did not connect to Tiantougou to clear the ditch immediately. Make full use of the Spring Festival leisure season, assault clean up the internal and external three ditch, keep the ditch open, ensure that dry irrigation, stains can row.
2, due to seedlings supplement fertilizer, promote weak seedlings transformation and upgrading. For most of the appropriate sowing, basic seedlings moderate, basic, normal, and relatively full group of the first and second types of seedlings should be based on the principle of "control wax and green manure, replant jointing booting fertilizer" principle, without having to chase Apply green fertilizer. For deficiencies in basal fertilizer, especially in late-seeding weak seedlings, precipitation (fields with no fertilizer in the early rain and snow stages) should be topdressed with nitrogen fertilizer to promote transformation and escalation.
3. Timely chemical weed control and sheath blight control. Before the jointing of wheat, the average daily temperature reached above 5-8 degrees in sunny days (before the cold wave arrived) to carry out chemical weeding and prevent the whole seedlings of sheath blight before the wheat rose.
4, to prevent late spring cold hazards. According to the freezing condition of wheat seedlings, the crops with severe freezing conditions in the wheat field are topped with nitrogen fertilizer to promote the recovery of the wheat seedlings.
Fruit trees
Continuing to make antifreeze protection work for the cold-tempered tree, pay attention to removing pathogens that overwintered and overwintering pests, and strengthen the application of pre-fertilizers to timely sparse or inflorescence fruit trees such as peaches, plums and pears. Rainwater, solar terms, and fruit tree grafting.
vegetables
Seize the opportunity, timely planting, planting good eggplant, melon, beans vegetables.
Before the Spring Festival, leafy vegetables that have been put on the market must be cultivated in a sunny climate. The basic fertilizer should be applied, and the early tillage and early turning should be done. The specific planting density can be properly adjusted according to the actual conditions such as cultivation objectives. For example, if two layers of tomatoes are topping, the high yield in the early period before mid-June should be 5,000/mu or so; if large-fruit type and medium- and late-stage yields are required, 3,000 to 3500 plants can be planted in acres. About 3,000 eggplants and about 5,000 pickled peppers are used to make a living plant. Lettuce, oil and wheat dishes can be sown in the greenhouse.
Cultivate strong seedlings
1, control the temperature. Anti-high temperature burning seedlings, leggy, prevent freezing damage. Tomato 18 °C ~ 22 °C, melon 22 °C ~ 28 °C, beans 15 °C ~ 25 °C. The temperature in the morning shed should not be less than 8°C. Fumigation method can be used to prevent seedling disease and to do seedling training before tomato colonization.
2, appropriate replenishment, supplement fertilizer. As the temperature gradually rises and the amount of growth increases, it is necessary to supplement the water with appropriate supplements. The water should be dry and wet, and it should be watered from 10 a.m. to 12:00 a.m. on sunny days, and be properly ventilated in the evening to cover the shed to reduce the humidity in the greenhouse. Nitrogen fertilizer is the main supplement fertilizer, and urea and ammonium bicarbonate must not be topdressed separately to prevent ammonia poisoning from burning seedlings.
3. Ventilate the seedlings with proper ventilation to enhance the stress resistance of the seedlings.
4, to prevent the emergence of pests and diseases on seedbeds.
Prevention of pests and diseases
At present Daejeon's main two categories: one is cauliflower, lettuce, cabbage, rape, etc., were listed on March to June. Such vegetables should be ploughed as soon as possible cultivating soil, and Mushi urea 20kg ~ 30kg, to promote growth.
The other type is a big winter in the greenhouse. Such as tomatoes, cucumbers, zucchini and so on. Tomato should be timely pruning, scaffolding, moderate heat preservation (22 °C ~ 28 °C), after the flowering in the middle and late February should pay attention to flowering, promote fruit set.
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