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Compounded regulator for promoting growth of cotton seedling under weak light and application thereof

A regulator, cotton technology, applied in the direction of plant growth regulator, plant growth regulator, application, etc., can solve the problems of insufficient light and heat resources of cotton, slow growth and development of cotton, etc.

Active Publication Date: 2018-08-10
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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  • Compounded regulator for promoting growth of cotton seedling under weak light and application thereof
  • Compounded regulator for promoting growth of cotton seedling under weak light and application thereof
  • Compounded regulator for promoting growth of cotton seedling under weak light and application thereof

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

The invention discloses a compounded regulator for promoting the growth of a cotton seedling under weak light. The compounded regulator is prepared from the following components in parts by mass: 5 to20 parts of glucose, 3 to 30 parts of potassium dihydrogen phosphate, 0.05 to 0.2 part of 5-aminolevulinic acid, 0.04 to 0.2 part of gibberellin (dissolved by using a little ethanol), tween-20 accounting for 0.1 percent of the total mass of a solution and the balance of water. The regulator provided by the invention not only has the effects of promoting the growth of a stem and a leaf, but also can be used for promoting the growth of a root system, can be also used for improving the stress resistance of a crop, is used for finally improving the tolerance, to a weak-light condition, of the cotton seedling, and is used for promoting the growth of the cotton seedling under the weak light.

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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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
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