The causes and countermeasures of non-charging of cabbage in summer
The planting of Chinese cabbage in summer often results in the phenomenon of no leaf rolling and no inclusion, which affects its commodity value and food value. This is a problem often encountered in summer cabbage cultivation.
Causes:
First, the variety is not right.
Second, the temperature does not apply. Cabbage thermophilic climate, the most suitable for the rosette period is 17-22 °C, if the lotus sitting temperature is too high, the growth is too prosperous, will make the heart of the package delayed or the bag is not true; if the temperature is too low (balling period) 5- If the accumulated temperature below 12°C is not satisfied within 7 days, the growth of the heart leaves is extremely slow, and the heart is not covered.
Third, fertilizer and water shortages. Chinese cabbage grows fastest during the ball stage, absorbing the most water, absorbing 89% of the total absorption of nitrogen, phosphorus and potassium. If the loss of fertilizer and water is not sufficient at this moment, the growth will be obstructed.
Control measures:
1. Variety selection. Summer cabbage should be selected as high-temperature, high-humidity, pest-resistant early hybrid varieties.
2. Rational fertilization. In the balsam root stage, manure fertilizer and phosphorus and potassium fertilizers should be added; in the early and middle stages of the balsamic bulbs, the decomposed human and animal manure and potassium dihydrogen phosphate should be applied once.
3. Scientific water supply. During Chinese cabbage cabbage, it is necessary to keep the water even and provide sufficient supply to keep the soil moist.
4. Prevent pests. During the Chinese cabbage cabbage, the leaves must be inspected and the pests should be found. Immediately spray 1500 times of farmland music and 2500 times of benomylazole 2-3 times. Spray once every 10-15 days. If there is a virus disease, 800 times more virus A aqueous solution, or 600 times more virus virus solution should be added.
5. Foliar spraying fertilizer. The foliar spray once every 7-10 days in the balsam bulby stage, a special vegetable fertilizer, or a mixture of 0.1% magnesium sulfate, 0.3% urea, 0.3% potassium dihydrogen phosphate, and even spray 2 - 3 times, evenly wet the leaves, suitable for dripping.
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