Doing this can prevent the tomato seedlings from being weak and prosperous. You can try it.

Tomato seedlings are raised in the high temperature season in summer. Under the conditions of quasi rainy and high temperature, it is easy to form thin and leggy seedlings, which is very unfavorable for the subsequent growth and development of tomatoes. This time, we will talk about a key point in the management of tomato seedlings: methods to prevent leggy growth of seedlings.

One is the regulation of greenhouse temperature. In the high temperature season, the night temperature is too high, which is easy to cause the plants to grow vigorously. The effective way to reduce the night temperature is to reduce the heat storage of the wall and soil during the day, such as shading, irrigation, and interplanting creeping vegetables.

The second is moderate fat control. Vegetable farmers can delay the original watering time for 2 days, and at the same time pay attention to the amount of watering, and water it thoroughly to avoid flooding. In summer, the amount of evaporation is large, and when water is used to control prosperity, it is recommended to use small water frequently to avoid excessive water control and affect the normal growth of plants.

The third is to keep the fruit at the right time and prune the branches reasonably. Combined with the growth of the plants, the fruit should be kept early for the prosperous plants, and the fruit picking should be delayed appropriately to compete for the nutrients of the plants as much as possible and reduce the flow of nutrients to the plants. Conversely, when the plants are weak, they should be picked earlier. Prosperous plants should be properly pruned late.

The fourth is to choose the appropriate control agent to force the vigorous backflow of nutrients in the tip, and the inertial advantage of the tip is rapidly weakened to the capping situation. The main nutrition of its trunk is turned to the young fruit development system, which can improve the fruit expansion vigor, avoid the phenomenon of leaf hypertrophy, and improve the permeability of the field.

Fifth, the large and small water is alternately carried out. In summer, the temperature is high, and the amount of water evaporation is large. After two or three days of watering, the surface will dry out quickly. In addition to the high temperature, the plants are prone to wilting. At this time, vegetable farmers often immediately water and flush Fertilizer, water and fertilizer are sufficient, so that the stem and leaves of the plant grow vigorously, resulting in an imbalance of nutrition and reproductive growth. Then, watering in summer has the dual functions of replenishing water and cooling. If watering is too frequent, the amount of water is too large, and the soil humidity is too high, one is that the root system floats on the surface and does not stick down; the other is that the plant growth is unbalanced.

Therefore, it should be irrigated frequently with small water or alternately with large and small water. When the soil is dry, irrigation with large water intervals can ensure both root growth and cooling. Of course, when the shed temperature is too high, it should also be supplemented with artificial or micro-spraying for foliar watering, and the temperature of the shed should be lowered.

Sixth, reduce the use of nitrogen fertilizers. Plants grow too vegetatively, and there are often more nitrogen fertilizers in the soil. Vegetables can easily lead to vigorous growth after absorption. Therefore, in order to suppress the vigorous growth of stems and leaves, vegetable farmers should pay attention to adjusting the proportion of fertilizers. When topdressing, they can choose potassium dihydrogen phosphate, suspended calcium, etc., and focus on supplementing potassium, calcium, phosphorus, etc., and can be used in conjunction with fertilizers containing amino acids. To promote nutrient absorption, coordinate plant growth, cultivate strong trees, and improve resistance.

After the vegetables grow vigorously in the high temperature season, the vegetative growth and reproductive growth will be unbalanced, which is unfavorable for the later flowering and fruit setting, and it will take some time for the vegetables to return to normal after the vigorous growth. , Reasonable conditioning to ensure normal plant growth.