Hello, there are two main elements that we share with you today: the first is the main technology to be used for the delayed cultivation of acupunctures, and the second is to teach you how to grow acupunctures。
1. What are the key techniques that should be available for acupuncture delayed cultivation
In recent years, tomato prices from late june to late july have tended to be higher than those from april to june, making late spring tomato cultivation hot. In practice, the following key technologies should be available for post-tripping。
(1) selection of suitable varieties
The varieties of tomatoes suitable for spring-spring cultivation should be medium- and late-stage mature, fruit-size, strong growth, disease-resistant, especially anti-virus disease, deadness, etc., and not fissible fruit。
(2) due delay in seeding
The harvest period for late spring planting should be set by late may or early june to late july, when the harvest is generally closed. The seedlings of tomatoes should not be too old and the planting period should therefore be delayed appropriately. For example, in the hangzhou region, it is usually appropriate to sow between the end of december and mid-january so that planting can take place between the end of march and april。
(3) covering the covering and taking simple measures to combat the cold。
The delayed planting of tomatoes in the spring and the increased temperatures during the planting process, but cold air in the south still exists, making it necessary to keep warm and cold using a simple cover method. It's usually covered in huts. However, coverings must be used. Of course, the conditions for greenhouse cultivation and rain protection will significantly reduce the incidence of disease and provide credible assurance of successful delay in cultivation。
(4) a timely trim and a reasonable period of 7 to 10 days after the trim, shall be provided with a timely erection and begin to trim。
It is common to combine a spring-planted tomato with a single trough, so that plants can maintain their strong growth potential in the middle and later stages。
(5) the safe passage of deep sorghum cultivation through the annual may rainy season is one of the keys to successful delays. There is therefore a need for strict enforcement of deep trenches and wows and the timely elimination of water accumulation in order to prevent long-term water accumulation in the fields。
(6) the bordeaux liquid shall be used regularly from seed onwards and shall be used regularly。
The duration of the seedlings is generally 1-2, and the concentration should be controlled at 0. 15 to 0. 2%. After planting seedlings in the field, the concentration gradually increased from 0. 2 to 0. 4 to 0. 5 per cent every 15-20 days. Although bordeaux liquids do not directly prevent disease, their use increases resistance to adverse environments and pests with thick tubers and green leaves. (7) pest control
The planting of tomatoes in the spring was delayed. Major pests include early disease, viral disease, bacterial atrophy, aphids, fibrosis and burns. Control should be carried out through integrated control methods, including draining canals and reducing field humidity. (c) the timely removal of leaves, leaves, nuts and strains and the improvement of ventilation and light in the fields, as well as timely chemical control。
How do you plant the autumn tomatoes
Temperature conditions are very demanding for growth and development and require adequate lighting but are not sensitive to the length of light. Using this feature, autumn tomato cultivation is currently taking place in many parts of east and central china. In the autumn, tomatoes are usually encountered at an early stage, followed by a number of storms and, at a later stage, low temperatures. Here are some of the key techniques for planting autumn tomatoes。
(1) take care of the choice of varieties and grow them in due course
Tomato varieties suitable for fall cultivation should be heat-resistant, pre-cooked, flower-intensive, disease-resistant and resilient. As for the date of seeding, local flexibility needs to be adapted to the actual situation. Usually, it was planted some 110 days before the beginning of the calendar year. For example, the zheji region in the north had its first frost around 10 november, so the planting date was around 10 july. It is too early to sow, which is even more serious or unacceptable because of viral diseases. However, when seeding is too late, many fruits are not yet mature due to late temperatures and are frozen, resulting in a severe decline in production。
(2) pest prevention
The fall tomato breeding period was the highest temperature in a year and often encountered dry and early weather and aphids were very severe. Aphids not only directly harm tomato seedlings, but also, more seriously, they can transmit diseases, especially viral diseases, which can lead to disease in tomato plants. Therefore, it is necessary to use cooling and mites. Often, seeds are planted directly in a nutrition scab, then covered with soil and straw, and covered with small arches over a shaded net, with stings sprayed every 7 to 10 days from the date of planting。
(3) soil selection and timely seeding
When it takes about 25 days for a seedling to plant in a timely manner, and using deep ditch high-silication techniques, 2,200-2500 plants per acre should be grown. Noodles are covered with straw in order to reduce soil temperature, protect the particle structure of the soil and prevent soil pressure。
(4) rational sheltering, preservation of flowers。
The fall tomato growing season is short and should be used as a pole. Cuts usually use two to three roots to ensure that there are between six and seven fruit per plant, with three to four fruit per ear, usually producing between 3,000 and 4,000 kg. At an early stage, because of high temperatures, growth regulators can be used to promote sit-ins。
(5) reasonable application 7 days before seeding fat
In general, 2000-2500 kg per acre and 25 kg per calcium per phosphate. Following the manufacture of silicon, calcium phosphate, potassium sulphate and urea were painted in the centre of the sap. They are 15 kg, 15 kg and 8 kg, or 25 kg of composite fertilizers, respectively. When the first ear of the plant is about 2 cm long, fattening is pursued once, once after harvest, 3-4 times and 15-20 kg of combined fat is added each time when the pursuit is stopped 30 days ago。
(6) timely insulation
Autumn tomatoes are grown in the open land, but in the northern part of the yangtze they must be covered by insulation, which can be grown directly in greenhouses or solar greenhouses. The nylon insulation shall be covered when the temperature is reduced to about 15°c。
(7) when the fall tomato fruit begins to harvest, the temperature is gradually reduced and the fruit changes slowly. Late harvests can usually take place during green maturity, and the final harvest must precede the frost. The fruits of the later harvest are not yet ripe enough to be stored indoors and sold after maturity。
Common storage methods: in clean, non-polluted rooms, sterilized with lime, spread between 5 and 8 centimetres of straw, piled about 40 centimetres of fruit, then added a layer of straw, a layer of nylon and a layer of straw. Fruits of different maturity periods shall be stored separately and periodically examined to remove the diseased and bad fruit and shall be sold with red ripe fruit。
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