Delayed soil covering technology for cotton planting rows fills the technological gap in Xinjiang

Learned from the Xinjiang Academy of Agricultural Sciences: From 2019 to 2021, the cumulative promotion and application area of cotton planting row soil delay technology exceeded 20 million acres, and the cumulative income of cotton farmers and enterprises increased by nearly 3 billion yuan. In 2022, this technology will continue to be promoted on a large scale in the cotton areas of northern Xinjiang. Southern Xinjiang is in the multi-site test demonstration stage, and it is expected that the promotion and application area will exceed 10 million acres this year.

This technology was jointly developed by Tian Liwen, a researcher at the Institute of Economic Crops of the Xinjiang Academy of Agricultural Sciences, and his team, together with 8 universities, scientific research institutes, and enterprises inside and outside Xinjiang. It fills the gap in Xinjiang’s agronomic rain disaster prevention technology and is a high-yield, high-quality, and efficient cotton planting technology. Another major breakthrough.

Compared with traditional sowing, the planting row covering delay technology breaks the conventional sowing method of “punch, sow, cover, and suppress” and changes it to “punch, sow, suppress”, and then “punch” after the seedlings have emerged. “cover with soil” method, and increase the sowing depth appropriately. This technology is combined with other seedling preservation technologies such as “dry sowing and wet seeding” and precision sowing. The seedling preservation rate is more than 25.3% higher than that of conventional rain-damaged cotton fields, and is stable at around 85%.

In recent years, rainfall in Xinjiang has increased significantly, especially during the cotton seedling emergence period in northern Xinjiang. Rainstorms usually cause hard crusts to form on the surface of the cotton planting rows. As a result, many cotton seedlings are “cooked” under the hard crusts and are unable to emerge from the soil. The average seedling rate is about 35% lower than that of demonstration fields. In order to recover losses, cotton farmers usually resort to manual or mechanical methods of breaking the soil shell after rain. When the disaster is severe, other crops need to be replanted or replanted, which not only increases the cost of cotton planting, but also delays the farming season.

Tian Liwen said that this technology changes the soil covering of planting rows during sowing to covering soil after emergence, which can change passive disaster exposure to active disaster prevention, effectively solve the problem of low seedling emergence rate caused by rain disaster in cotton seedling stage, and open up new opportunities in cotton production. A new approach to rain disaster prevention technology in seedling agronomy.

AAA

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