Small Shed Cabbage Takes Care of "Dry Heart"

The phenomenon of “dried heart” sometimes occurs during the cultivation process of small arched cabbage cabbage, which not only leads to a decline in food availability, but also leads to a reduction in yield, which is a relatively serious physiological disease. The “dried heart” of cabbage is mainly caused by physiological calcium deficiency in the plant. It begins to occur at the time of bulblet and continues until cabbage is harvested. Calcium deficiency is mainly caused by the following reasons:

1. The lack of calcium in the soil, excessive application of nitrogen fertilizer, affect the absorption of calcium; weather and soil drought, on the one hand will increase the concentration of soil solution, on the other hand because of the inhibition of microbial activity in the soil, affecting the absorption of calcium fertilizer use.

2. The soil moisture is closely related to the "dry heart" disease. When the weather and soil are dry, the plants lack water, and the absorption and operation of calcium are hindered, which affects the absorption of calcium fertilizer.

3. When the root system is too shallow, the root system cannot use the deep soil calcium fertilizer; when the ground temperature is low, the soil contains too much ammonium nitrogen, which inhibits the absorption of calcium.

The measures to prevent cabbage from "drying up the heart" are:

1. Increase the temperature in the shed.

2. Reasonable fertilization. Base fertilizer is dominated by organic fertilizers, supplemented by chemical fertilizers, do not apply nitrogen fertilizers, and pay attention to the ratio of phosphorus and potassium fertilizers.

3. Strengthen field management. In the seedling stage, timely cultivating or spraying without deep ploughing of soil conditioners will make the deep soil loose and transparent, promote root development, and increase absorption capacity. During the ball stage, water often to keep the soil moist and do not dry.

4. Calcium-depleted soils such as calcium superphosphate, gypsum and other calcium fertilizers increase the content of calcium in the soil.

5. Cabbage ball with 50 grams of rice vinegar at the beginning, 50 grams of superphosphate to 14 kilograms of water, and the leaves were sprayed twice.

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