Today is the rain in the 24 solar terms. After the rain, the precipitation increases, the air humidity is high, the temperature rises, and the light is sufficient. At this time, the vegetables in the facility protection area are the key period for growth. How to strengthen management?
1, open field warm crop planting
The warm-cut melons and vegetables such as cucumber, tomato, eggplant, pepper, melon, and pumpkin planted in the open field have been transplanted into the field one after another. It is necessary to select the “cold tail warm head†for sunny planting. The climate index for the planting is the minimum temperature for 5 consecutive days. Stable at 10 ° C or above, 10 cm ground temperature is stable above 13 ° C. Generally, the plain area is from late April to early May; the high-altitude mountain area is in mid-May and mid-May. Applying organic fertilizer as base fertilizer, applying more than 4,000 kilograms of decomposed fine-grained high-quality organic fertilizer per acre, two-thirds of which are laid before the cultivated land, and one-third of the organic fertilizer is applied to the surface. Fine ground preparation should be done to level, flatten, ridge straight, no shovel; 5-7 days before planting, the seedlings are subjected to low-temperature refining; when planting, the density is suitable and the depth is consistent. Tomatoes and eggplants should be deeply planted, covering more than 2-3 cm above the nursery; cucumbers, pumpkins, melons and other melon crops should be planted shallowly, and the soil and the nursery should be level. Water the planted water in time after planting.
2, greenhouse vegetables are the key period of production formation
The cucumbers in the greenhouse should be harvested in time for the harvest; the crops such as tomato, eggplant and sweet pepper are in the flowering stage, which is the key period for the formation of yield.
Adjust the appropriate growth environment: According to the external climate change, the air outlet should be opened and closed in time to ventilate. Suitable for sunny days during the daytime is 23°C-30°C, cloudy days should be lowered by 3°C-5°C, suitable temperature is 20°C-23°C, and nighttime suitable temperature is 15°C-20°C; different indoor air can be adjusted according to different crops. Humidity, tomato, eggplant and other crops are kept at 40%-50%; melon crops such as sweet pepper and cucumber are kept at 60%-80%. Try to increase the amount of light per day as much as possible.
Plant finishing: timely vines, vines, loquats, pruning and snoring, remove the lower yellow leaves and old leaves. The tomato will be destroyed when the first ear fruit grows to the green ripening stage (when the whitening is no longer grown), and the dark green leaves of the lower part of the cucumber should be destroyed in time. Otherwise, it may be susceptible to downy mildew due to poor ventilation. After leaving the old yellow leaves, you should leave about 16 functional leaves for each tomato and cucumber plant.
Fruit management: Tomato and eggplant should adopt natural pollination method to maintain flavor and quality. It can be pollinated by oscillating pollinator, or 1-2 boxes of bumblebee can be used for pollination per acre. Growth regulator for scented or sprayed flowers. The concentration should be prepared according to room temperature, and the concentration is too high to produce deformed fruit. Tomatoes should be sprayed with an oscillating pollinator or conditioner when each flower is opened 3-4. If the flower is sprayed when 1-2 flowers are opened, the fruit will only be 1-2 and the yield will be affected. Remove excess flowers and fruits early. Cucumber can be used to form melons without manual aiding pollination. It is forbidden to use "Shun Zhiling" and other hormones to promote the expansion of young melons.
Scientific topdressing and watering: watering and topdressing according to weather conditions, plant growth and soil conditions. Topdressing should vigorously promote water and fertilizer integration technology to apply with drip irrigation. Tomatoes should be topdressed with NPK when the length of each ear is 3 cm. High-potassium instant fertilizer with a content of 16:8:34 is 5-8 kg per mu; it can also be applied with NPK-rich alginic acid or humic acid organic liquid fertilizer with water; small water is poured to avoid flooding, each time The watering amount per acre is 8-10 square meters. Increasing the concentration of carbon dioxide inside has the effect of increasing production and improving quality. The usage and dosage is 20 bags of carbon dioxide gas fertilizer per acre.
Harvest at the right time: The fruit is harvested in time after ripening. Every morning harvest can improve the nutrient content, taste and flavor of the fruit; cucumber, sweet pepper and eggplant are cut with scissors to prevent the plant from being torn off by hand. Easy to infect diseases. When picking, it should be handled gently to avoid the formation of fruit damage and reduce the quality of the goods. After harvesting, they are sold according to the size of the fruit.
3, the greenhouse vegetables do a good job in two periods of management
In the early spring, cucumbers have been harvested and listed. Tomatoes, eggplants, sweet peppers and other crops have entered the flowering stage. In addition to timely adjustment of temperature and indoor air humidity, management of flowering and fruit expansion should be done.
Management of flowering period: cucumbers, tomatoes and other climbing vines in time to hang vines and vines to fix plants, it is best to use silver-gray plastic rope to hang vines, to avoid the role of mites. Don't prematurely snoring the tomatoes. When the branches under the first spikes grow to 8 cm, they should be beaten so as not to affect the growth of the roots. The fruit-type cucumbers should be removed from the fifth leaves below the young melons and flower buds. The leaves begin to bear the melon. Tomato and eggplant are preferred to use bumblebee pollination or oscillating pollinator to assist pollination to promote fruit setting. Spraying or scenting can also be used to promote fruit setting, but it is necessary to grasp the timing of operation to avoid the occurrence of deformed fruit and fruit number and fruit. Untidy growth.
Management of fruit expansion period: When the fruit of the base is sitting and starting to expand, it will be watered and topdressed. The tomato will grow to the size of the first ear and the size of the walnut (about 3 cm in diameter), and the eye of the eggplant (the diameter of the fruit is 3-4 cm) is suitable. When watering, it should be selected in sunny morning, in order to apply fertilizer with drip irrigation. According to the fertilizer requirements of different crops, different ratios of fertilizer should be used. Tomato should be applied with high potassium instant fertilizer with NPK content of 16:8:34. 5-8 kg per mu; it can also be applied with NPK or humic acid organic liquid fertilizer with water. Increasing the concentration of carbon dioxide inside has the effect of increasing production and improving quality. The usage and dosage is 20 bags of carbon dioxide gas fertilizer per acre.
4, sowing and colonization of open field fast-cooked vegetables
Gu Yu can still continue to sow leeks and sowing or planting rapeseed, cabbage, radish, fennel, celery and other fast-ripening vegetables. It is necessary to do fine soil preparation, uniform sowing, suitable for covering soil, and suitable for lyrics.
5. Strengthen management of open vegetables
Crops such as cabbage, cauliflower, lettuce and lettuce planted in early spring have entered the rosette period. At this time, the growers should do a good job in management of cultivating loose soil, topdressing, watering, and management of topdressing and watering of green onion seedlings. The spinach planted before winter and the quick-ripening vegetables planted and planted in the previous period are watered and cultivated. The wintering spinach is harvested from late April to early May, and it should be harvested in time for the best commodity period.
Gu Yu is also a busy season for farmers. At this stage, the management of vegetables is good, and you will definitely get a bumper harvest.
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