A kind of cotton defoliation and ripening acceleration suspension concentrate and application method thereof

Abstract

The invention discloses a cotton defoliating and ripening suspension agent and an application method thereof. The cotton defoliating and ripening suspension agent disclosed by the invention comprises the following components in weight percentage: 5-7% of thidiazuron, 55-65% of sodium chloride, 0.05-0.15% of silicone oil defoaming agent, 0.3-0.8% of propylene glycol antifreezing agent, 4-6% of polycarboxylate dispersing agent, and the rest of water. The application method disclosed by the invention comprises the following steps: adding 3.75 L of the defoliating and ripening suspension agent and 225 g of methyl oleate emulsifier into 450 kg of water, preparing a spraying solution, and spraying for two times. Due to spraying for two times, the defoliating rate and the wadding rate can be above 95% and 90%. Compared with a traditional defoliating and ripening agent, the defoliating and ripening suspension agent disclosed by the invention has the advantages that ginned cotton is increased by above 6.0%; the fibre length is also increased. Compared with a traditional defoliating agent and ethephon mixed agent, the cotton defoliating and ripening suspension agent has the advantages that the total use amount of the agent is reduced by 25%; the use amount of thidiazuron is reduced by 25%; the ethephon is reduced; the total cost is reduced by 20%.

Description

Technical field [0001] The invention relates to a cotton defoliation and ripening suspension agent and an application method thereof, belonging to the technical field of agriculture. Background technique [0002] With the improvement of the degree of mechanization of cotton fields and the expansion of the area of ​​mechanized cotton harvesting, various defoliants and ripening agents are used more and more widely. The application of high-efficiency defoliation and ripening agent can improve the picking rate and work efficiency of mechanized cotton harvesting, while reducing the pollution of cotton leaves to mechanically harvested cotton, and improving the quality of mechanized cotton harvesting is a key part of mechanical cotton harvesting. [0003] The ripening agent currently used is mainly ethephon, which can accelerate the movement of leaf photosynthesis and nutrients in the boll shell to the seeds and fibers, and promote the early cracking of the cotton boll. However, there ar...

AI Technical Summary

Problems solved by technology

Since no compound that can both defoliate and ripen has been found so far, the mixed application of defoliants and ripening agents is an effective solution that is commonly used, but the mixed effects of different types of defoliants and ripening agents are different. In addition, the spraying time and concentration of the spraying agent will also affect the spraying effect of the defoliation and ripening agent.

In addition, the type of adjuvant added to the medicament will also have a certain impact on the efficacy of the medicament

At present, the machine-picked cotton planted in China is mainly an early-maturing variety with more concentrated bolls. The premature application of defoliation and ripening agents shortens the physiological function period of cotton leaves, which is bound to have a certain negative effect on cotton yield and fiber quality.

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