Radish is one of the vegetable vegetables in the vegetable market with a long supply time and a large market share. In addition to the hot summer, there are few radish varieties available in other seasons. High quality radishes are very popular in the market, but inferior radishes are often left out.

What are the types and symptoms of inferior radish? The following are common in the market. One is the heart, that is, the center of the fleshy root lacks nutrients and water, and there is an empty (bubble) heart; the second is bitterness, that is, the radish root contains humic acid, which tastes slightly bitter; the third is spicy, which is the radish fleshy root. It contains different degrees of spicy taste; the fourth is the cracked root, that is, although the fleshy root remains inflated, the crack on the epidermis has different depth and groove marks, which affects the gloss.

Why are some inferior products appearing during the growth of radish? From the reflection of cultivation measures, some lessons are worth summarizing.

The production of heart radish, first, sowing too early, insufficient fertilization in the early stage, early twitching, early flowering, nutrient breakage; second, the peak of the growth of fleshy roots encountered high temperature, drought, due to the imbalance of fertilizer and water is easy to worry; third is the base fertilizer Excessive nitrogen fertilizer, the area of ​​radish leaves is large, and the root system is weakly developed, and it is easy to get rid of fat and heart; the fourth is improper selection of varieties. Corresponding measures in production, first, when the temperature is too high, use small individual varieties to plant, avoid using large individual varieties; second, should apply base fertilizer, reduce nitrogen fertilizer, increase phosphorus and potassium fertilizer; Planted in drainage and irrigation plots.

The spicy taste is caused by the volatile mustard oil in the root cells. Some varieties have a spicy taste in the lower part of the fleshy root, some are in the upper part, some are not spicy, and the summer sowing radish has a high spicy taste. In the winter sowing radish, the radish of white radish is lower than the green radish. To this end, in production, we must distinguish the needs of the varieties, optimize the fertilizer, avoid high temperatures, prevent pests and diseases, and reduce the accumulation of mustard oil.

Bitterness is a basic compound containing nitrogen. If the formula of radish fertilization only pays attention to nitrogen fertilizer and neglects elements such as phosphorus, potassium and calcium, bitter melon will be produced in the fleshy root. The decomposed organic fertilizer or commercial organic fertilizer is compounded with multiple compound fertilizers.

The production of cracked roots is mainly due to the lack of timely supply of fertilizer and water in the early stage of radish growth. The development of fleshy roots is inhibited and the outer cortex is hardened. When the rain is sufficient in the late growth stage, the growth of the cells accelerates, causing the hardened cortex to expand and crack. As long as attention is paid to the timely and reasonable regulation of fertilizer and water in production, it is possible to avoid cracks in the fleshy roots.

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