Autumn tomato cultivation techniques, autumn tomato sowing time

Cultivation techniques of Tomato in Yanqiu

From the geographical point of view, Guizhou itself is a province composed of Custer landform, the average elevation of the province is about 1100m, because its land area is very large, so it is very suitable for growing all kinds of out-of-season vegetables. With the adjustment of agricultural structure and the continuous development of agricultural economy, tomato has become one of the main vegetable varieties planted in Guizhou. In the process of summer tomato planting in Guizhou, seedling cultivation has become a very key link. And because the weather changes very frequently in Guizhou Province, there are actually many difficulties and failures in the process of out-of-season tomato planting, so the majority of planting users need to pay special attention to the planting technology of out-of-season tomato in Guizhou. I hope this article can give you a better reference.

1 preparation before sowing

1.1 Variety selection

In the process of tomato planting in Sinan County, Guizhou Province, it is especially necessary to choose many other varieties with good quality, such as 9130, Hong General, Wang Zhongwang, Jin Tama and so on. These tomato varieties which are often valued in many places in Guizhou not only have high quality, but also have good commerciality and disease resistance, and have good performance in many places, including Sinan County, Guizhou Province.

1.2 rational selection of nursery sites

In the process of tomato cultivation in Guizhou, special attention should be paid to the selection of seedling sites. It is a good choice to choose those nursery sites with higher topography, better drainage and better ventilation. In addition, in the process of sowing, we should also pay attention to the following links: first of all, pay attention to covering the top of the seedling ground with items such as straw curtains and straw, so as to effectively prevent evaporation due to high temperature in the seedling land. after that, the greenhouse film can be built on it. In order to make the management of the greenhouse more convenient, we can not make the greenhouse cover too low. Generally, the height of the greenhouse is set at 80cm, and the length is set at about 6m. And pay particular attention to the fact that no other crops have been planted in the land where tomatoes are grown in three years.

1.3 Disinfection of seeds

In the process of cultivating tomato, the most important thing is to make the seeds sprout quickly and neatly, and in this process to enhance the disease resistance of the seeds themselves. Therefore, it is necessary to sterilize and accelerate germination of seeds before sowing, which can be divided into the following steps [1]. First, put all the seeds in a bag made of gauze, and then soak them in water at a temperature of about 50 ℃ for about 15 min. After that, the seeds were soaked in 10% potassium permanganate solution for about 20min. Finally, when the seeds show white buds in the process of sowing, they can begin to sow.

1.4 choose the right time to sow

Because the altitude of the whole Guizhou region involves a very wide range, therefore, we especially need to choose different sowing dates according to different elevations. In the areas below 1000m above sea level, the sowing time should be about May to June. If the altitude is in 1100m~1300m, you should choose to sow seeds in late May. The elevation of Sinan County in Guizhou Province is about 1302m, so it should be sown from the end of May to the middle of June. In the process of sowing, special attention should be paid to soil watering. In the process of sowing, you can sow about 3 seeds directly into the cave, or directly prevent the seeds from being in the nutrition bag, especially if you need to sprinkle a layer of sifted nutrient soil at the end, and then cover and bury the seeds gently, in order to keep the seeds moist, you need to sprinkle a small amount of water above the seeds.

2 field management

2.1 before emergence

Special attention should be paid to keeping the seedbed moist before emergence, and the situation of the land should be observed from time to time to prevent land caking. According to the situation, both ends of the greenhouse do not need to be ventilated. If there is a high temperature in summer, the greenhouse film at both ends of the greenhouse should be opened so that it can be ventilated at any time. Except when it is hot in summer, the time for opening the greenhouse film should be controlled between 1300 and 1600 in the afternoon. Pay attention to keep the seedling bed moist at all times, and if you find that there is not enough humidity, you should especially arrange the watering work in the morning.

2.2 growth period

Topdressing is a very important work in the process of planting Yanqiu tomatoes, which can be used for 4 or 5 times. Topdressing should be carried out at the frequency of 150~210kg per square meter, and then the protective fruit fertilizer should be increased in the follow-up so as to increase the growth of the fruit. Since then, in the process of large-scale fruit harvest, manure water can be used to fertilize, and compound fertilizer can be applied in conjunction with compound fertilizer if necessary. In the process of topdressing, the amount of fertilizer should be flexibly adjusted according to the growth of the plant.

2.3 reasonable pruning

In the process of tomato field management, reasonable pruning is a very important link. Timely pruning of branches and leaves can effectively alleviate the growth contradiction between branches, so that plants can absorb more sun to improve their immunity. For plants with particularly complex structures, we can retain the main branches first and then remove all the branches and leaves on the other sides. On the one hand, it can help the wound to heal better in the process of pruning, on the other hand, it can effectively prevent germs from spreading widely through branches and leaves. If in the process of planting, it is found that the target plant has flowered and the fruit above becomes smaller because of extrusion, which directly affects the appearance of the tomato, then attention should be paid to its coring treatment. only in this way can we ensure the normal supply of plant nutrition. More attention should be paid to the removal of sick leaves in the process of planting, so as to ensure that the plant can carry out photosynthesis under normal conditions.