Why are cotton flowers different in color?

Cotton grows such long flocs not for human beings, but for allowing itself to carry on the family line. Because cotton, like willow and dandelion, is a so-called "wind-borne flower". Their seeds have long hair, so that they can be scattered in the wind and spread in all directions. It is this that human beings make use of cotton; Every time I always choose cottonseed with long cotton wool, over time, cotton wool grows longer and longer, and cotton grows according to people's will.

Interestingly, the flower of cotton turned out to be a "chameleon". It is white when it blooms in the morning, and it soon turns pale yellow. In the afternoon, cotton gradually turns red and finally purple. In fact, this is a wonderful anthocyanin technique. The petals of cotton contain anthocyanins, and the color of anthocyanins will change rapidly with the change of temperature and pH value. In this way, within a day, with the different sunshine and temperature, marshmallows will constantly change their "costumes". In addition, different varieties often have different colors. For example, the flowers of upland cotton are white, the flowers of Asian cotton are white, yellow or red, and the flowers of island cotton are golden yellow.

One of the characteristics of cotton flowering and fruiting peaches is that it needs phosphate fertilizer very much. If phosphorus fertilizer is insufficient, it will often cause buds to fall and bells to fall. It was not difficult to apply some phosphate fertilizer to cotton, but if we apply phosphate fertilizer to the soil according to the conventional fertilization method, it will not work, because cotton can not absorb it quickly. what can I do? People have adopted a clever method-topdressing outside the roots and spraying phosphate fertilizer directly on cotton leaves.

It turns out that there are many pores on cotton leaves, which is where crops usually breathe gas and water. Strictly speaking, these pores are "nostrils". You spray phosphate fertilizer on the leaves, and the solution of phosphate fertilizer (calcium superphosphate) enters the veins along these nostrils, and then is sent to cotton peaches and various parts from the veins. Now, "nose" has become "mouth".

Cotton is a kind of wealth and an important cash crop.

Cotton is mainly planted to collect cotton.

However, with the development of chemical industry, cotton has become an important raw material for chemical industry, which is used to make rayon, photographic film, artificial leather, fake paint, smokeless powder and so on.