Chemical topping method of cotton

Abstract

The invention discloses a chemical topping method of cotton, comprising the following steps of: a, 3-5 days before and after the first bloom period of the cotton, spraying mepiquat chloride to carry out basic chemical control so that the cotton can grow stably without growing vigorously, wherein the dosage of the mepiquat chloride is 4-10g/mu; b, before and after the full bloom period of the cotton, spraying chemical topping agent on leaf surfaces, wherein the spray should be higher than the cotton plants, the dosage of the chemical topping agent is 40-80ml/mu and 15-30kg of water is mixed; and c, 3-15 days after the spraying of the chemical topping agent, spraying the mepiquat chloride to stabilize the chemical control of plant type, wherein the dosage of the plant type is 8-15g/mu, and the topping agent comprises the following components is percentage by weight: 20-30% of mepiquat chloride emulsion, 40-60% of water and 15-25% of flumetralin emulsion. Through the method, the automatic topping of the cotton can be realized, the topping quality can be ensured, the topping uniformity of cotton fields can be improved, the labor efficiency can be improved and the labor intensity can be lightened.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a cotton chemical topping method. Background technique [0002] my country is a big country in cotton production, consumption and trade, and the cotton industry is of great significance in the national economy. At present, among the three major industries of grain, cotton and oil in my country, cotton is the most labor-intensive industry, which seriously affects people's enthusiasm for cotton planting. Topping is a key link in my country's cotton cultivation and management, which directly affects the final yield and quality of cotton. Cotton is a temperature-loving crop with unlimited growth habits. In order to make full use of the effective growth period and reduce the occurrence of invalid buds, when cotton enters a certain growth stage (about the flowering and bolling stage), it needs to be topped. For a long time, the method of artificial topping has been adopted in m...

AI Technical Summary

Problems solved by technology

[0006] (1) The workload is heavy and the efficiency is low, and each skilled worker tops less than 3 acres per day;

[0007] (2) Difficult to operate, and it is difficult to have strict standards for manual topping methods. Generally, it is required to knock off the top of the leaf and one heart, which is difficult to identify, and it is easy to make the topping too large or too small

The topping is too large, that is, the method of "grabbing a lot". This method removes a few more fruit branches, which is equivalent to advancing the topping time. It not only wastes the nutrients used on these fruit branches, but also seriously affects the cotton production. ; If the topping is too small, it is difficult to distinguish the top bud from the top small fruit branch, and it is easy to mistake the top fruit branch for the top bud and be removed, and it takes a lot of work

[0008] (3) poor timeliness

If the management quota of 2 hectares per person is used, the entire topping process will take about 10 days, and it is difficult to meet the requirements of a unified and quick end, and it is easy to miss the effective critical budding period

[0009] (4) Easy to miss

[0010] (5) Topping uniformity is low

Inconsistent topping standards or inconsistent topping time for different workers will affect the uniformity of the cotton field