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Setaria italica chemically-controlled seedling thinning method

A technology free of thinning and millet, applied in the fields of seed and rhizome treatment, application, agriculture, etc., which can solve the problems of cumbersome artificial thinning

Active Publication Date: 2017-06-20
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, for a long time, farmers in my country have been using large seeding rates (15.0~30.0kg / hm2) to plant millet. 2 left and right) to ensure full seedlings, and then achieve a suitable seedling density through artificial thinning, and artificial thinning is a cumbersome work

Method used

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  • Setaria italica chemically-controlled seedling thinning method
  • Setaria italica chemically-controlled seedling thinning method
  • Setaria italica chemically-controlled seedling thinning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Using the local millet variety "Changnong 44" as the material, the full grain seeds were screened and weighed, and two grain seeds with the same quality were taken, one for drug treatment and one for control;

[0021] Add 3.6‰ clomazone medicament according to the ratio of medicament volume to grain seed mass ratio of 8.3:10 (L / kg), soak at 28°C for 1 hour, and replace clomazone medicament with equal volume of distilled water for control;

[0022] The grain seeds are fished out, air-dried, and sown.

[0023] Results: There was no significant difference between the emergence rate of the medicine-soaking group and the control group, both reached more than 90%, but the leaves of the millet seedlings in the medicine-soaking group were albino leaves; the leaves of the seedlings of the medicine-soaking group grew wilting after 7 days of growth, and the seedlings gradually died after 12 days. During the same period, millet seedlings in the control group grew well.

Embodiment 2

[0025] Using the local millet variety "Changnong 44" as the material, the full grain seeds were screened and weighed, and two grain seeds with the same quality were taken, one for drug treatment and one for control;

[0026] Add 0.72‰ clomazone medicament according to the proportion of medicament volume and grain seed mass ratio of 8.3:10 (L / kg), soak at 28°C for 5 hours, and replace the clomazone medicament with equal volume of distilled water for control;

[0027] The grain seeds are fished out, air-dried, and sown.

[0028] Results: There was no significant difference between the emergence rate of the medicine-soaking group and the control group, both reached more than 90%, but the leaves of the millet seedlings in the medicine-soaking group were albino leaves; the leaves of the seedlings of the medicine-soaking group were wilting after 8 days of growth, and the seedlings gradually died after 14 days. During the same period, millet seedlings in the control group grew well. ...

Embodiment 3

[0030] Using the local millet varieties "Changnong 44", "Taixuan 15" and "Changnong 35" as materials, the full grain seeds were screened and weighed. Three grains with the same quality were taken for each variety, and one was used as a control. Two copies are used for drug treatment.

[0031] The two grain seeds in the drug treatment group were added with 1.2‰ and 1.4‰ of clomazone at a ratio of 8.3:10 (L / kg) by volume and mass of grain seeds, and soaked at 28°C for 3 hours. volume of distilled water instead of clomazone;

[0032] The grain seeds are fished out, air-dried, and sown.

[0033] The statistics of the results are shown in Table 1.

[0034] The calculation formulas of seedling emergence rate (%) and seedling retention rate (%) are as follows:

[0035] Emergence rate (%) = total number of seedlings / total number of sowing

[0036] Seedling retention rate (%) = total number of seedlings retained / total number of emergence

[0037] Table 1 After soaking clomazone,...

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Abstract

The invention provides a Setaria italica chemically-controlled seedling thinning method. The method comprises the following steps: soaking Setaria italica seeds with a Dimethazon agent, airing, proportionally mixing with normal seeds, and sowing, wherein the germination rate and the seedling emergence rate of the Setaria italica seeds treated by the Dimethazon agent are not influenced, thereby ensuring normal germination and seedling emergence of the treated Setaria italica seeds, and realizing the effect of breaking through soil based on population heterosis; after breaking through the soil, leaves of the seedlings of the treated Setaria italica seeds are whitened and can not carry out photosynthesis, so that the leaves wilt after growing for 10 days or so, and the seedlings gradually die; and after breaking through the soil, the seedlings of the normal seeds favorably grow, thereby realizing seedling thinning in the Setaria italica planting process. By using the technical scheme provided by the invention, the purposes of labor saving, time saving, cost saving and effectiveness increasing can be achieved; and the method effectively realizes the high yield of sound Setaria italica seedlings.

Description

technical field [0001] The invention relates to crop thinning technology, in particular to a millet chemical control and exemption thinning method. [0002] technical background [0003] Millet (Setaria italica L.) is a small-grained semi-dense planting crop, with a thousand-grain weight of only about 3.0g, as many as 300,000-350,000 seeds per kilogram, and a suitable seedling density of 375,000-750,000 plants / hm 2 , that is, the amount of seeds used is 2.5~4.5kg / hm 2 , due to the small grains of millet, the weak seedlings need to exert their ability to top the soil in order to ensure full seedlings. Therefore, for a long time, farmers in my country have been using large seeding rates (15.0~30.0kg / hm2) to plant millet. 2 left and right) to ensure full seedlings, and then achieve a suitable seedling density cultivation method through artificial thinning, and artificial thinning is a cumbersome work. [0004] Millet chemical control and thinning-free technology is based on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C1/00
CPCA01C1/00
Inventor 王亚丽仪慧兰
Owner SHANXI UNIV
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