How long will the frost weather on cotton last?

1, usually more than a week, will have a certain impact on cotton, but it also scores. Look how frozen it is. If there is only frost without freezing, this effect is little or no. So the key is to see if it is frozen.

2、

The lower limit temperature of cotton growth: long-staple cotton begins to germinate at 9 ~ 10℃, and upland cotton begins to germinate at 1 1~ 12℃.

The optimum temperature for cotton growth is 20~25℃, which is in a state of "heat saturation", when the net photosynthetic productivity of cotton is the highest and the cotton grows the fastest; When the temperature is higher than 28℃, it is called "real heat", the photosynthetic productivity decreases and the growth rate of cotton slows down obviously; When the temperature is lower than 20℃, cotton growth is in a state of "hot hunger".

When the temperature is as high as 36~37℃, the growth of cotton is inhibited and stopped, which is the biological upper limit temperature of cotton. In hot summer, cotton mainly grows at night.

When the temperature is higher than 46℃, cotton pollen even loses its vitality, which is the high temperature suffered by plants. It is called the upper limit temperature of cotton pollen life.