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A compound regulator for promoting the growth of cotton seedlings under weak light and its application

A regulator, cotton technology, applied in the directions of plant growth regulators, plant growth regulators, applications, etc., can solve the problems of insufficient light and heat resources of cotton, slow growth and development of cotton, etc., to improve crop stress resistance and promote root growth. , the effect of promoting leaf stem growth

Active Publication Date: 2021-06-04
COTTON RES INST HEBEI ACAD OF AGRI & FOREST SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies in the prior art, the purpose of the present invention is to provide a compound regulator for promoting the growth of cotton seedlings under low light and its application, so as to solve the problem of cotton light and heat resources in the wheat-cotton symbiosis period under the "wheat-cotton intercropping" mode. Insufficient cotton growth retardation

Method used

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  • A compound regulator for promoting the growth of cotton seedlings under weak light and its application
  • A compound regulator for promoting the growth of cotton seedlings under weak light and its application
  • A compound regulator for promoting the growth of cotton seedlings under weak light and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Prepare compound regulator 1: add 5g of glucose, 3g of potassium dihydrogen phosphate, 0.05g of 5-aminolevulinic acid, and 0.05g of gibberellin (dissolved with a small amount of ethanol first) into each liter of water, stir well, and then add the mass of the mixture 0.1% Tween-20 to obtain compound regulator 1.

[0014] Test application: under greenhouse conditions, hydroponic cotton seedlings, the hydroponic substrate is the improved Hogland culture medium, the culture medium is replaced every three days, and the cultivation light intensity is 100μmol·m -2 ·s -1 . After the cotton cotyledons were flattened, spray 0.5% glucose + 0.3% potassium dihydrogen phosphate, 0.005% 5-aminolevulinic acid and compound regulator 1, spray evenly on the surface of the leaves, once every three days, and at the same time Spray water as a reference. When the seedlings grew to the three-leaf stage, samples were taken to evaluate the effect of spraying compound regulator 1 on the growth...

Embodiment 2

[0018] Prepare compound regulator 2: add 50g of glucose, 25g of potassium dihydrogen phosphate, 0.8g of 5-aminolevulinic acid, and 0.6g of gibberellin (dissolved with a small amount of ethanol first) per liter of water, stir evenly, and then add the total amount of the solution. Tween-20 with 1% by mass was used to obtain the compound regulator 2.

[0019] Test application: Under field conditions, spray the compound regulator 2 after the cotton cotyledons are flattened. Before spraying, dilute the compound regulator 2 by 10 times and spray evenly on the surface of the leaves. Until harvesting, use spraying water as a reference. Sampling surveys were carried out during the wheat-cotton symbiotic period and the main growth period of cotton respectively. The effects of compound regulator 2 spraying on cotton growth and yield are shown in Table 2, Table 3 and Table 4.

[0020] Table 2 Effect of compound regulator 2 on dry matter accumulation of cotton seedlings under wheat-cotton...

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Abstract

A compound regulator for promoting the growth of cotton seedlings under weak light, which is composed of the following components in parts by mass: 5-20 parts of glucose, 3-30 parts of potassium dihydrogen phosphate, and 0.05-0.2 parts of 5-aminoacetylpropane acid, 0.04 to 0.2 parts of gibberellin (dissolved in a small amount of ethanol), Tween-20 accounting for 0.1% of the total mass of the solution, and the balance of water. The regulator of the present invention not only has the effect of promoting the growth of stems and leaves, but also can promote the growth of roots, and can also improve the stress resistance of crops, and finally improve the tolerance of cotton seedlings to low light conditions, and promote the growth of cotton seedlings under low light conditions. Growth of cotton seedlings.

Description

technical field [0001] The invention belongs to the field of plant seedling growth aids, and in particular relates to a compound regulator for promoting the growth of cotton seedlings under weak light and an application thereof. Background technique [0002] "Wheat-cotton intercropping" is an important multiple cropping model, and it is one of the most effective measures to improve land use efficiency and alleviate the contradiction between grain and cotton. However, under this model, wheat and cotton have a symbiotic period of about 45 days. At this time, time, The distribution of heat resources is uneven, cotton seedlings are shaded by wheat, and their growth is inhibited. How to increase the accumulation of cotton photosynthetic products in the wheat-cotton symbiotic period and promote the growth of cotton seedlings is the core issue for the smooth implementation of the "wheat-cotton intercropping" model. [0003] 5-Aminolevulinic acid (5-aminolevulinic acid, referred to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/16A01N37/44A01N59/26A01N45/00A01N43/12A01N25/30A01P21/00
CPCA01N25/30A01N37/44A01N43/12A01N43/16A01N45/00A01N59/26
Inventor 祁虹王树林张谦冯国艺王燕雷小鹏梁青龙林永增张寒霜王永强刘祎刘建光杜海英刘旭
Owner COTTON RES INST HEBEI ACAD OF AGRI & FOREST SCI