Growth and development characteristics of cotton

One is the unlimited growth habits. Under proper environmental conditions, the main stem of the cotton can grow upward continuously, and the fruit branch can be continuously grown. The fruit branch can continue to laterally proliferate the fruit section, and the bell can continue to increase. This feature is extremely favorable conditions for seizing high cotton yields. Appropriate early sowing for application in production, measures to promote early growth of seedlings, prevention of premature senescence and mulching, etc., are based on this feature, extend the growth period as much as possible, increase the effective ringing period, and give full play to the potential for cotton yield increase. The unlimited growth habits of cotton also have a negative side. For example, it is easy to grow long, it is easy to be late for greediness, and it is also prone to secondary growth in the later period.

The second is a warm temperature and a good light. Cotton is a thermophilic crop that requires higher temperatures throughout life. According to studies, the optimum temperature for growth and development is 25-30°C. The minimum temperature required for each growth period of cotton is: seed germination at 10.5-12°C, emergence at 16-17°C, and bud emergence at 19-20°C. During the development of cotton bolls, the temperature of the fiber below 15°C does not extend, and the fiber below 20°C stops thickening. Cotton is a good light crop. The length of light and the light intensity all affect the growth of cotton. In general, cotton develops fastest under 12 hours of light per day. Under 8 hours of light, due to malnutrition of cotton, it will delay development. Light intensity needed for cotton is higher than that of general crops such as wheat.

The third is the growth and long time. From the time budding cotton begins, it enters the period of vegetative growth and reproductive growth, and continues to boil. It usually lasts for 70-80 days. During this period of time, there is a contradiction between nutrient growth and reproductive growth, nutrient distribution, and the need for environmental conditions. If improperly handled, resulting in excessively prosperous nutrition or poor growth, it can cause the emergence of a boll shedding. Less than more buds, more bells, big bell purpose.

The fourth is strong regeneration ability. Every axillary bud of a cotton plant has an axillary bud. When the cotton plant suffers natural disasters such as wind, earthworm, and insects, as long as there is sufficient time and measures are taken to create suitable conditions, new shoots can be produced and a certain amount of yield can be obtained. After the injury of the young roots of cotton, more new roots can be grown. The deep cultivating in buds is the use of this characteristic. In addition, cotton also has a wide adaptability and controllable shape, so that the high yield cultivation of cotton has a very rich content.

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