Method for replacement control of crofton weeds by corns

A kind of technology of substitution control of E. japonica, applied in the fields of land preparation method, botanical equipment and method, application, etc., can solve the problems of low economic benefit of forage substitution, less adaptation to soil types, etc. The effect of increasing farmers' income and good economic use value

Inactive Publication Date: 2019-07-19
INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a method for controlling Eupatorium adenophorum by using corn instead of planting, which can not only solve the problem of low economic benefits of pasture replacement, but also solve the problem that

Method used

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  • Method for replacement control of crofton weeds by corns

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: alternative plant ecological adaptability test

[0019] The substitute plants tested were maize (provided by Xichang Agriculture and Animal Husbandry Bureau) and paspalum broadleaf. The test was carried out in Yuanjiashan Village, Xichang City, Sichuan Province. The test site is located at 22°78' north latitude, 102°23' east longitude, and an altitude of about 1600m. The highest monthly average temperature throughout the year is 22.2°C, the average January temperature is 8.7°C, and the average annual precipitation is 1015.8mm. It was rainy from June to September in the test year, and drought was severe in January and December.

[0020] Table 1 planting method for testing alternative plants

[0021] type Seed rate (kg / hm 2 )

Row spacing or hole spacing (cm) Sowing depth(cm) Plowing without planting none none none corn 4 plants / m 2

line spacing 50 1-2 corn 6 plants / m 2

line spacing 50 1-2 corn ...

Embodiment 2

[0024] Embodiment 2: alternative plant ecological adaptability test

[0025] The substitute plants tested were corn (provided by Xichang Agriculture and Animal Husbandry Bureau), soybean, marigold, paspalum broadleaf, kudzu vine, and perennial ryegrass. The test was carried out in Yuanjiashan Village, Xichang City, Sichuan Province. The test site is located at 22°78' north latitude, 102°23' east longitude, and an altitude of about 1600m. The highest monthly average temperature throughout the year is 22.0°C, the average January temperature is 7.6°C, and the average annual precipitation is 1044.6mm. In the test year, it was rainy from June to September and severe from November to February.

[0026] Table 2 planting methods for testing alternative plants

[0027] type Seed rate (kg / hm 2 )

Row spacing or hole spacing (cm) Sowing depth(cm) Plowing without planting none none none Paspalum broadleaf 22.5 line spacing 30 1-2 soybean 22.5 ...

Embodiment 3

[0030] Embodiment 3: field experiment of controlling Eupatorium adenophorum by corn

[0031] The test was carried out in Lizhou Town, Xichang City, Sichuan Province, about 28km due north from the site of Example 1. The climate and altitude are similar to those of the Yuanjiashan Village test site, and the test site is flat and evenly fertile. The soil type is tidal soil, the pH value is about 6.8, and the organic matter content is about 1.9%.

[0032] The seed density of the experimental corn was sown on April 1, 2015, when the soil moisture was good. First cut off Eupatorium adenophorum evenly on the ground, and then completely dig out the roots of Eupatorium adenophorum. The sowing density of corn was planted in holes according to Example 1, and the row spacing between plants was 30cm×60cm. The corn of Eupatorium adenophorum is planted next to the hole planted according to four treatments of 2, 1, 0.5, and 0 times the isodensity of corn. 20m per community 2 , repeated 3...

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Abstract

The invention discloses a method for replacement control of crofton weeds by corns, and belongs to the field of biological control. The method includes the steps of corn sowing, timely weeding, targeted fertilization and the like on a land growing the crofton weeds, the crofton weeds are replaced by the corns and can be rapidly and effectively removed, and harmful spreading of the crofton weeds can be continuously reduced. After sowing, the corns rapidly germinate and grow in the whole growth period and are large in biomass and high in light interception ratio, a crofton weed land soil seed bank can be remarkably reduced by tillage before planting and management after planting, crofton weed seedling emergence is inhibited, replacement control of the crofton weeds is effectively achieved, soil fertility can be increased, and the crofton weeds serve as plants with economic utilization values.

Description

technical field [0001] The invention belongs to the field of biological control, and in particular relates to a method for controlling Eupatoria adenophorum by using corn instead. Background technique [0002] Eupatorium adenophorum (Eupatorium adenophorum Spreng), a perennial herb or subshrub of the genus Eupatorium adenophorum in the Asteraceae family, is native to Central America, Mexico and other places. Eupatorium adenophorum has super sexual seed reproduction and asexual reproduction ability, each plant of Eupatorium adenophorum can produce 30,000 to 100,000 seeds, the seeds are extremely small, and the weight of a thousand seeds is only 0.04 to 0.045g, which can be spread by wind, water or carry . Eupatorium adenophorum can grow suitably in climate conditions where the annual average temperature is greater than 10°C, the absolute minimum temperature is not lower than -11.5°C, the maximum temperature is below 35°C, and the annual average relative humidity is higher th...

Claims

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Application Information

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IPC IPC(8): A01G22/20A01G13/00A01B79/00
CPCA01B79/00A01G13/00A01G22/20Y02A40/22
Inventor 欧阳灿彬朱文达李林方文生黄斌刘晓漫颜冬冬李园王秋霞曹坳程郭美霞
Owner INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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