Cotton high-density and small individual planting technology
1. Adopting high-density and small-individual cultivation technology is the key to obtaining high yield
Xinjiang is an arid area, and cotton needs a certain amount of heat to grow, which provides favorable conditions for cotton production. Xinjiang has a wide range of cotton cultivation, but the personnel cannot get high yields. After repeated trials, the area has adopted high-density and small-individual cultivation techniques, which has effectively increased the yield of cotton. There are many factors affecting cotton production, mainly temperature, light, moisture, air and soil nutrients, of which temperature is the most critical factor.
The main heat indicators for cottonification growth in Xinjiang are: the hottest month (July), the average temperature is about 25℃, the number of days when the temperature is higher than 15℃ is about 145 days, and the accumulated temperature is 3000-3600℃ when the temperature is greater than or equal to 10℃. . In Xinjiang, the final frost ended relatively late, which seriously affected the normal growth of cotton. The temperature drops faster in autumn, which also affects the maturity of cotton fibers.
Therefore, in order to ensure that cotton can obtain high and stable yields in this area, traditional planting techniques cannot be used. However, the use of high-density small plant cultivation can effectively alleviate the above problems and achieve the effect of increasing production.
The main criteria of this technology are: the harvested cotton plants should reach 12,000-15,000 plants/mu, and the plant height should be controlled within the range of 65-85cm; the number of effective bolls per plant is 4-5, and the number of effective branches is controlled within 7-8, and the bell branch ratio should be controlled between 0.65-0.85. Therefore, a suitable planting method can not only effectively increase the ground temperature, but also effectively avoid the impact of night frost on cotton plants.
2. Implement full-process control technology to increase cotton production
Nowadays, high-yielding cotton areas in Xinjiang have adopted chemical control technology, and whether the use of chemical control technology is reasonable will directly determine whether the cotton can achieve the purpose of early maturity. Therefore, during the growth period of cotton, 3-5 chemical control techniques are generally used. Generally, the first application is to promote the root system at the current time of cotton seedlings, and the second application at the 3-5 leaf stage is to promote the early flower bud differentiation and early bud formation and promote the growth of the root system. The third time is to use it during the flowering period of cotton to optimize the canopy structure, shape the plant type, promote early boll setting and its development, and increase the absorption of soil nutrients by the root system. The fourth time was used in the cotton blooming and boll-bearing period, which can effectively increase the boll-branch ratio. For the fifth time, after cotton topping, benzidine was sprayed to increase the speed of leaf transportation of nutrients to the cotton bolls. High-density and small individual cultivation of cotton and the application technology of meepamine
3. Matters needing attention in the use of methenamine in cotton
1. Strictly control the use conditions. Methiophene is suitable for cotton fields with good fertilizer and water conditions, and cannot be used when cotton fields are harmed and natural disasters are inhibited.
2. Control the dosage of medicines. It is not advisable to use too much medicine. Avoid using them in large quantities at one time, especially during the seedling, budding and flowering stages to strictly control the dosage. Otherwise, a large number of cotton buds will fall off and the yield will be severely reduced.
3. Pay attention to the use of water and fertilizer in combination with methenamine. Pay attention to the management of fertilizer and water. It must be noted that no fertilization or watering is allowed because the leaf color becomes darker after application.
4. Pay attention to weather changes when spraying. Generally, it should be before 10 am or after 8 pm on a sunny day. You can re-spray once if it rains 8 hours after spraying. In the opinion of the editor, cotton is the main economic crop in my country, and its planting prospects are still very large. Therefore, the above is the high-density cultivation and management techniques for cotton planting. Everyone who grows cotton can try it.
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