Article illustrations
Article illustrations
Answer 1, seedling: before seeding, plant three to four hours with water, then impregnate for 20 minutes with 10% sodium phosphate solution, wash the seeds after leaching, and then seed them at 25-28°c. Land preparation: 4000-500 kg of rotting organic fertilizer, 15 kg of urea, 50 kg of calcium phosphate, 20 kg of potassium sulphate, deep tillage, flattening of boxes。
I. Tomato cultivation and management techniques
1 child breeding
(1) before seeding, leaching for about 3-4 hours with water and then leaching for about 20 minutes with a 10% sodium phosphate solution. After the leaching, the seed is washed and then sprung (about 2-3 days) in an environment of 25-28°c, during which one or two washes are used daily。
(2) seeding per square metre of seed beds is about 10-15g, and if the sprout rate is less than 85%, an appropriate increase is required。
(3) after seeding, cover 0. 8-1cm thick fine soil, and 50% of the filamentable powder fine soil per square metre bed is distributed equally。
(4) the winter spring needs to cover the membrane and summer fall needs to cover the sunnet until 70% of the seeds are seeded and the cover is removed。
Land consolidation
(1) selecting deep-soiled, estranged and fertile soil for cultivation。
(2) accumulated organic fertilizers of 4,000-5,000 kg, 15 kg urea, 50 kg of calcium phosphate and 20 kg of potassium sulphate per acre。
[together culture and management techniques, what breeds of tomatoes are formed after they are domesticated] (3) deep tilling, flattening, 80 cm wide, 16-24 cm tall, 33 cm wide, two rows per compartment。
Three
(1) in the case of early planting in the spring protected areas, planting is generally scheduled from late february to early march. In the case of field membrane cover cultivation, it is generally established around 20 march. At the time of planting, the average daily temperature requires more than 15 °c and the temperature requires stabilization at more than 10 °c。
(2) early-literated varieties, using a full dry branch with a range of 50 x 30 cm, with approximately 3,000 units per acre. Medium- and late-lated varieties, single-dry whole branches, around 3,500 each acre, double-dry whole branches, around 2,000 each acre。
4. Fertilisation
(1) shrimp fat
Follow-up of seedling fattening, 250-500 kg of man-to-man manure per acre and 5 kg of urea (which, in the case of pre-maturized varieties, needs to be increased)。
(ii) obese fat
1 when the first estuarine swells, combined with water, 500 kg of manure, 8-10 kg of urea per acre。
2 when the first ear fruit is white and the second and third ear fruit enters a period of rapid expansion, 25 kg of ammonium phosphate and 25-30 kg of potassium sulphate compound fertilizer per acre are pursued 2-3 times。
(3) out-of-the-ground pursuit of fat
At the time of flowering of tomatoes, apply 0. 5-1% urea solution, or 1% past calcium phosphate leachate, or 0. 1-0. 2% potassium phosphate solution, or 0. 4-0. 7% calcium chloride solution, which can be applied in combination or alternately。
5. Water management
(1) cultivation of the pine soil after planting, approximately six days after the pine soil, water once, promotion of the seedlings, followed by cucumbering according to the tomato variety。
(2) control of water recharge during flowering of the first bouquet in order to prevent flowers from falling fruit due to excessive growth of the leaves。
(3) after the first fruit, the plant needs more water and should be irrigated in a timely manner。
(4) during the outcome period, soil is kept humid, with about 80% humidity. Water is poured every seven days at low temperatures and every four days at high temperatures。
6. Temperature management
The main target is the shed planting。
(1) the temperature is high before the seedlings are slow, especially when the temperature is high. The normal temperature is around 28°c and if the temperature exceeds 30°c, it needs to be ventilated。
(2) the temperature is controlled at 24-26°c during the day and at 15°c at night after a slow seedling。
(3) at the end of the outcome period, the temperature is controlled at around 25°c during the day, and if above 26°c, ventilation is required and if below 20°c, the vent is closed. The temperature at night is controlled at about 13-15°c and between midnight and the morning of the following day, at about 10-13°c。
The whole branch
(1) single whole branch: only one main branch is retained and the remaining side branches are removed as long as 4-7 cm。
(2) half of the whole branch: on a single branch, a branch under the first bouquet of the main truncheon shall be retained and its heart shall be taken after bearing one or two ears。
(3) two dry whole branches: the side branches under the first bouquet shall be retained and the rest removed。
8. Preserve
(1) during the flowering period, flowers are painted or immersed with a 2,4-d of 10-20 ppm or with a 20-30 ppm ketchup spray, which can effectively prevent the fall of flowers。
(2) artificial pollination can be carried out during the flowering period, as a result of a light vibration in the varnishing sequence at a lesser humidity. If, on the basis of artificial pollination, the precipitator is still difficult, it can be used to process the varnish。
Ii. What are the varieties of tomatoes formed after their domestication
1. The varieties of tomatoes resulting from their domestication are cherry tomatoes。
As a general rule, the tamponization history of tomatoes is divided into two processes, ranging from blueberry-sized peri-species (sp) to ordinary cherries-sized small fruit tomatoes (slcs) and then ordinary large fruit-type tomatoes (slls) to be eaten everywhere, during which 5 and 13 fruit-weight genes, respectively, were targeted by humans。
3. The tomatoes that are currently consumed are domesticated by wild tomatoes, whose weight, colour and shape have changed significantly during their domestication. In terms of weight, for example, wild tomatoes weigh only about 1-2g, while modern tomato cultivation weighs more than 100 times the weight of their ancestors。
