Now the weather is getting warmer, and many growers are preparing to grow vegetables. In fact, there are more vegetables suitable for planting in April. There are cucumber, melon, watermelon, bean, spring radish, spring cabbage, celery, and quadrangular in the south. Beans, spring cress, taro, yam, Jerusalem artichoke, bean potato, bamboo leafy vegetables, leeks, leeks, green onions, etc. In the north, there are Chinese cabbage, white radish, carrot, potato, spinach, cauliflower, broccoli, onion, lettuce, purple cabbage, celery, Chinese cabbage, Shanghai green, coriander, leeks, onions, and sage.
What vegetables are planted in January and April?
In the north, vegetables can be grown in the fields: Chinese cabbage, white radish, carrots, potatoes, spinach, cauliflower, broccoli, onions, lettuce, purple cabbage, celery, cabbage, Shanghai green, coriander, leeks, onions, sage and so on.
The south can grow vegetables in the field: cucumber, melon, watermelon, mid-late cooked gourd, bean, alpine eggplant, alpine pepper, vegetable corn, spring radish, spring cabbage, spring carrot, celery, winged bean, spring cress, taro , yam, Jerusalem artichoke, bean potato, bamboo leaf dish, leeks, leeks, green onions, onions and so on.
Common vegetable planting techniques in February and April
1. Spring onions: Generally, seedlings are started in the middle of March every year, and they are not cut in the spring. After the wheat harvest, they are planted in the field, and the frost can be harvested.
2, small arch shed or film west, melon: generally in mid-March of the annual Yangshuo seedlings, until the first April in April, then planted in the small arch shed or April 20th and then planted on the mulch, to the end of April to early May can be spotted cotton , for cotton and melon intercropping.
3, Solanum (chili, eggplant or tomato): Generally in the middle of March every year, Yangshuo nursery, until the end of April, then planted in the open field, wait until the wheat harvest.
4, early spring zucchini: can be raised in the middle of March, or can be broadcast on the film before and after April 10, the density is about 1500 per acre, until the wheat can be harvested before harvest.
5, spring beans: general infertile seedlings, direct use of film film live, sowing time is generally around April 10, about 3.5-4 kg per mu, about 4000 holes per acre, 3 seeds per hole, no seedlings.
6, spring radish or spring carrot: spring radish or spring carrot production is not high, but the market price of these two radish is not low, generally can build a small arch shed live in early March, until the end of May to early June Can be harvested.
March and April vegetable planting matters needing attention
1, anti-vegetable
(1) The temperature in April gradually rises, and the temperature difference between day and night gradually becomes smaller. Therefore, vegetable plants are prone to grow up, especially the solanaceous fruits and melons are particularly obvious, and once the plants are long, they are easy to cause falling flowers and flowers, even if they are Living fruits are also prone to cases of deformed fruit such as hollow fruit.
(2) In order to prevent the length of the child, first of all, to increase the temperature difference between day and night, the amount of nitrogen fertilizer should not be too large when fertilizing, try to increase the application of phosphorus and potassium fertilizer, in order to promote plant fruit.
2, improper anti-fertilization
(1) When the vegetables enter the middle and late stages of growth and development, the fertilizer requirement of the plants also begins to increase. If the fertilizer is not applied in time, the phenomenon of de-fertilization is easy to occur, and the plants are prematurely degraded. Therefore, it is necessary to increase the number of watering and the amount of watering appropriately. In combination with watering, fertilizer can be applied once a week.
(2) Topdressing should be based on a small number of times, avoiding too much application at one time, resulting in excessive concentration, resulting in rooting of plants, but a reasonable balance of fertilization, evenly increase phosphorus and potassium fertilizer to improve plant resistance.
3, anti-cold spring
(1) After the seedlings are out, the seedbed should be ventilated in time to allow the vegetable seedlings to pass the low temperature exercise, thereby improving the cold resistance of the seedlings.
(2) Ditching and planting vegetables should cover the mulch film, and the appropriate amount of irrigation should be used to reduce the degree of freezing damage before the spring cold. The surface of the plant can also be sprayed with a sprayer, so that the body temperature of the plant can be slowed down and the water vapor in the air can be increased. The content, the principle of condensation and exotherm to alleviate the freezing damage.
(3) When the cold current comes, a simple coal stove can be built in the nursery shed or the production shed for temporary heating, which can increase the temperature inside the shed to a certain extent, thus preventing the freezing damage of the plant.
(4) At night during the cold current, smoke in the field can effectively reduce or avoid freezing damage, but special attention should be paid to two points: First, the fireworks should be properly dense so that the smoke screen can cover the entire vegetable garden. It is necessary to choose the appropriate time and place for ignition. It should be ignited in the upwind direction from midnight to 2-3 am, so that the smoke can be covered on the ground until sunrise, and the effect is better.
(5) After a few days before the cold current, the cultivator will be cultivated. After the soil is loosened, it can also absorb and store the solar heat energy well. It also has a certain effect on alleviating the freezing damage.
4, anti-hormone poisoning
(1) In April, the temperature has gradually increased. Therefore, when the flower is used for flowering or melon operation, the concentration of anthers should be appropriately reduced, and the principle of using the hormone concentration limit at high temperature should be followed.
(2) If the hormone concentration is used too high, it will affect the flower bud differentiation of the plant, which will cause the leaves to shrink and deform, which will cause the plant growth to be hindered, resulting in malformed fruit, common peach-shaped fruit such as tomato and cucumber. The big head melon is basically caused by the fact that everyone does not reduce the concentration of anthocyanins or anthers.
(3) After the discovery of vegetable hormone poisoning, it should be sprayed with alizarin lactone or nucleotide 400 times solution for relief.
5, disease prevention and control
(1) After entering April, pests and diseases in the solar greenhouse will also occur in general. The principle of prevention is to prevent and control the spread of pests and diseases.
(2) Disease prevention and control: common vegetables such as cucumber, zucchini, tomato gray mold, can be used 25% fungicide smoked or 40% pyrimethanil suspension 600 times, 50% carbendazim 600-700 times liquid 50% procymidone 2000 times liquid spray control, while tomato late blight can be used chlorothalonil dust (1 kg per mu) powder spray or metalaxyl 800 times, 20% frost · manganese zinc wettable powder 600 times spray control For the treatment of Verticillium wilt, bacterial wilt, blight and ulcer disease of Solanum lycopersicum, it can be sprayed with 77% copper hydroxide, 50% dibutylammonium dibasic acid 500 times solution, and 58% cream for downy mildew. Ling·manganese-zinc 500 times solution or 50% chlorothalonil 600 times solution spray, 2-3 times in a row.
(3) Pest control: greenhouse whitefly or aphid, can be sprayed with buprofezin WP 1500-2000 times or 1.8% avermectin 3000 times, 50% anti-Poly 2000 times solution, spotted fly can be used 1% avermectin EC 4000 times solution or Avi·Insecticidal 1500 times solution, deltamethrin 2000 times solution spray control.
6, high temperature barrier
When entering the end of April, the temperature will be higher, the light will be stronger, and the vegetables are prone to high temperature obstacles such as sunburn. It is recommended that in the vegetable management in April, the leaves should not be removed too much. In addition to preventing high temperature, it is also necessary to spray the boron and calcium fertilizer on the foliar surface in time to promote the occurrence of physiological diseases such as flowering fruit and anti-umbilical rot.
7, windproof
Spring is a season with windy winds and winds, and dust storms may occur in some areas. Therefore, it is very important to protect the shed film and the skeleton from windproof work, especially in the case of windy weather. The fastening is not strong and it is easy to be blown away by strong winds. Therefore, it is best to pay attention to the local weather forecast every day, so that you can fix the scaffolding before the wind blows. To tighten the work of the film line, it is necessary to check the damage of the shed film and the damage. If it is, it should be repaired immediately.
8, scientific watering
(1) The outside temperature in early spring is relatively low, and the ventilation in the greenhouse is relatively small. Therefore, the timing, time, frequency and watering method of watering should be paid attention to in management.
(2) The vegetables covered by the plastic film in the greenhouse should be treated with submerged dark drip or drip irrigation. The watering amount per well is better, and the method of flooding can not be carried out.
(3) The time of watering should be determined according to the weather. It can guarantee 2-3 sunny weather after watering. Try to choose sunny day in the day. The watering amount should be based on weather, plant growth and soil moisture. And set.
(4) Watering in early spring does not require too high a frequency to prevent diseases caused by excessive humidity. After mid-to-late March, as the temperature increases, the plant growth is accelerated, and the amount and number of watering can be appropriately increased.
(5) Generally, after the watering, the shed film should be closed to increase the temperature inside the shed, and then wait until the ground temperature rises, then ventilate and ventilate in time, which is more conducive to the robust growth of the plant, thereby inhibiting the occurrence of pests and diseases.
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