first frost pulls radish.

because of different varieties and sowing time, the harvesting time of radish is different. Generally, the appropriate harvesting time is when the fleshy roots are fully enlarged. Early harvest and low yield; If it is too late, it is easy to suffer from freezing injury or chaff core and extraction, which will reduce the quality.

generally, spring radish is harvested 5-6 days after sowing; Summer radish grows fast and is harvested 45-6 days after sowing; Radish is harvested 7-1 days after sowing in autumn and winter. If it is a variety whose fleshy roots are mostly exposed on the ground, it should be harvested in time before first frost to avoid freezing. If the fleshy roots are all in the soil, it can be harvested late to improve the yield.

Extended information:

Radish is a semi-cold-tolerant vegetable, and its seeds can germinate at 2℃-3℃, and the optimum temperature is 2℃-25℃. In seedling stage, it can withstand high temperature of about 25℃ and low temperature of-2℃--3℃.

The temperature of radish stem and leaf growth is 5℃-25℃, and the optimum temperature is 15℃-2℃. The temperature for the growth of succulent roots is 6℃-2℃, and the optimum temperature is 18℃-2℃. When the temperature is below minus 1℃- minus 2℃, succulent roots will be frozen. ?

The soil available water content and air humidity of radish suitable for fleshy root growth are 65%-8% and 8%-9%. High air humidity can improve the quality. However, the soil moisture should not be too much, otherwise the air in the soil is lacking, which is not conducive to the growth and absorption of roots. If the soil is too dry, the spicy taste of fleshy roots will be enhanced and the quality will be poor.