At present, autumn sorghum vegetables are planted one after another. This 茬 vegetable grows in the high temperature and drought season, and the management difficulty is relatively large. In addition to the environmental factors, the prosperous plant is a major cause of poor flower bud differentiation, low fruiting rate, and many deformed flowers and fruits.
Plant growth leads to imbalance in nutrient supply
The flowering and fruiting period of vegetables is generally the critical period of nutrition. During this period, the demand for nutrients in vegetables is very sensitive, and the factors affecting the supply of nutrients in plants are mainly concentrated on the movement distribution of nutrients in plants, soil fertility, roots. The three aspects of absorptive capacity. In actual production, many vegetable farmers control plant growth by adjusting the growth environment and using growth hormone during the period from slow seedling to flowering. The purpose is to maintain the balance between vegetative growth and reproductive growth. In the hot season, vegetables are prone to prolonged conditions, vegetative growth is too strong, and a large amount of mineral nutrients are competed for, so that less nutrients are supplied to the flower buds, resulting in an imbalance of nutrient supply, resulting in a lack of nutrients, resulting in malformations of flowers and fruits.
Reasons for the longevity of autumn vegetables
First, the current temperature is high, especially at night, and the temperature difference between day and night is small.
Secondly, when the vegetables are planted, the base fertilizer is applied very much, especially in the base fertilizer, which has a large amount of chicken manure, while the chicken manure contains a lot of nitrogen, especially ammonium nitrogen, and the ammonium nitrogen is beneficial to promote the plant. Nutritional growth.
Third, in order to reduce the ground temperature, vegetable farmers often water the water, which also led to the growth of the tree.
Reasonable control of anti-vegetable
The prevention and control of vegetables is prosperous. The first priority is to adopt sunshade cooling measures to control the temperature inside the shed. In addition, the following points should be noted in production:
Be careful before topping the fruit: If the base fertilizer is applied adequately, it is rarely topdressed before fruit setting. In order to cultivate strong seedlings, the vegetable farmers can only apply some biological fertilizer or rooting agent in the seedling stage; if the base fertilizer is applied less, plus If the loss of fertilizer on the upper watering is serious, and the yellowish leaves are de-fertilized, it is necessary to properly topdress.
Control the amount of watering and the number of watering: In order to reduce the temperature, the vegetable farmers tend to water more often. It is recommended that the watering before the fruiting period should not be too frequent. The moderate drought of the soil is conducive to promoting the roots. When watering, it should be changed to flood water to pour small water, that is, watering along the water, the water can flow to the head. If the growth of vegetables is found to be too strong, water should be properly controlled, but water control should not be excessive, so as not to affect the normal growth of vegetables.
Evening vines: Take tomatoes as an example. Don't rush to hang the vines, let the plants lie down and restrain the top edge of the plants. Can be the first ear of tomatoes
Before the flower blooms, the section of the stem of the tomato stem is about 30 cm long and is placed to the north to inhibit the vegetative growth of the plant and promote the fruit setting. If it is planting autumn delay tomatoes, because the temperature will be lower and lower, the temperature difference is getting bigger and bigger, which is conducive to the vegetative growth of tomatoes to the reproductive growth, so the tomato should be lowered. It is generally necessary to slant a section of the stem of the tomato stem about 20 cm long.
If you want to grow the flower in advance, if the plant grows prosperously, you can leave the first ear of the fruit in the early stage, and inhibit the vegetative growth of the plant in the form of fruit falling, balance the plant growth, and improve the second and third inflorescences. Developmental quality.
On the basis of the above measures, if there are still signs of prosperity, it can be controlled by spraying growth points such as auxin and chlorophyll.
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