Tomatoes start as follows

Generally tomato leaves are reserved on the last panicle and fruit for heading, which is also beneficial to ensure the quality of panicle and fruit. The leaves should be thinned reasonably according to the actual situation, and should not be too heavy. A certain area of branches and leaves must be maintained around the fruit. The heading should not be too early or too hard, otherwise it will seriously affect the growth and development of roots, easily lead to premature aging of plants, and even cause leaf rolling. If it is cloudy continuously, chlorothalonil mixed with streptomycin can be used for foliar spraying.

1. Tomato head technology

1, the general tomato head, can keep 2 leaves on the last ear fruit and then hit, so as to ensure the quality of the last ear fruit, in order not to affect the tomato coloring, you can wait until the tomato color gradually turns white, and then remove 2 leaves.

2. Tomatoes in autumn and winter, the fruiting period is generally in winter, and the temperature and ground temperature at this stage will gradually decrease, resulting in a decrease in root absorption capacity, weak winter light, thus weakening photosynthesis, but fruit expansion needs sufficient nutrients, such as retaining 2 leaves in the last ear, which is conducive to improving photosynthesis and increasing nutrients, thus increasing yield.

3. Tomatoes planted in winter and spring enter the summer high temperature period in the late stage of results. Long-term direct sunlight causes the temperature of fruit shoulders to rise, resulting in partial tissue burns and death, causing sunburn. If two leaves are retained in the last ear fruit, it can not only produce nutrients, let the fruit grow normally, but also shade and avoid the occurrence of sunburn.

Second, tomato thinning leaf precautions

1. Tomatoes enter the middle and late growth period. In order to improve ventilation and light transmission and prevent pathogenic bacteria from infiltrating, if yellow and premature aging branches and leaves are found at the bottom, they should be removed in time, especially in the process of low temperature planting in winter and spring.

2, must be reasonable according to the actual situation thinning leaves, if it does not seriously affect ventilation, plant excess growth, branches and leaves are still green, should be retained as far as possible, not thinning leaves too heavy, otherwise it will affect fruit expansion and color.

3, generally in the early stage of growth should not be thinning leaves, such as excessive thinning leaves, easy to affect plant photosynthesis, resulting in poor fruit growth.

4, in the fruit around the need to maintain appropriate branches and leaves area, otherwise it is easy to lead to fruit surface temperature rise, causing yellow peel, thus affecting fruit color, cracking fruit, fruit expansion and so on. In the winter and spring planting process of low temperature, most of the leaves on the upper part of tomatoes that are about to turn color can be thinned, while in the high temperature planting process delayed in summer or autumn, the normal growth of fruits will be affected, resulting in yield reduction.

5. In order not to affect the growth and development of roots, it is not advisable to start too early or too hard, otherwise it will cause premature aging of plants and even leaf curl, which is generally high in autumn delayed tomatoes.

6. If it is continuously cloudy before and after thinning, it is easy to cause wound infection with bacteria. Therefore, it is necessary to use medicine to protect it. Chlorothalonil can be mixed with agricultural streptomycin for foliar spray. In addition, in winter and spring when planting at low temperature, in order to avoid infection of bacteria and diseases on fruits and leaves, thinning leaves should be carried out reasonably.