Technical points for applying potassium fertilizer in cotton fields

The effect of potassium fertilizer is to increase the physiological activity of cotton and increase the utilization rate of nitrogen fertilizer. Secondly, it promotes the growth of cotton roots, stems, leaves and reproductive organs, prolongs the functional period of leaves and prevents premature aging. The third is to enhance disease resistance and resistance. The reverse ability can significantly enhance the ability to resist blight in the old cotton area; the fourth is to increase the ringing rate and increase the weight of the single boll weight and the sub-finger. According to the comparative test, the application of potassium fertilizer is better than the control treatment. The number is increased by 2~3, the weight of single bell is increased by 0.6~1.4g, the sub-finger is increased by 0.25~1.3g; the fifth is increased by more than 10%.

The amount of potassium fertilizer The amount of potassium applied per mu in conventional cotton is generally 20 to 30 kg, and the insect-resistant hybrid cotton requires about 60 kg of potassium per acre. In the early stage, compound fertilizer was applied. In the bud stage, about 30 kg of potassium fertilizer should be applied per mu. Of course, localities can be mastered by soil, fertility and climate.

The time of applying potassium fertilizer It has been proved by many years and many times that potassium fertilizer is generally applied twice, once as the base fertilizer, and the second time as the home fertilizer (bud fertilizer), and the application in flowering and bolling stage is also effective. When applying potassium, it is recommended to mix it with organic fertilizer, and the effect will be better.

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