A kind of plant growth regulator for greenhouse rice, its preparation method and application

A rice and greenhouse technology, applied in the direction of plant growth regulators, plant growth regulators, botanical equipment and methods, etc., can solve problems such as low seed setting rate and thousand-grain weight, infection by diseases and insect pests, and weak rice plants, so as to improve the seed setting rate and Effects of 1000-grain weight, increased yield, and dwarf rice stems

Active Publication Date: 2018-11-06
CHINA NAT RICE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, rice plants grown in greenhouses are often relatively weak, and unfavorable conditions such as excessive growth, few tillers, easy lodging, and infection by diseases and insect pests often occur, resulting in fewer ears and smaller ears, lower seed setting rate and thousand-grain weight, and ultimately lead to yield reduction

Method used

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  • A kind of plant growth regulator for greenhouse rice, its preparation method and application
  • A kind of plant growth regulator for greenhouse rice, its preparation method and application
  • A kind of plant growth regulator for greenhouse rice, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 4.995 parts by mass of prohexadione calcium (active ingredient) and 0.005 parts by mass of brassinolide (active ingredient) were uniformly mixed to obtain an active ingredient mixture;

[0028] The wetting agent of 5 mass parts, the dispersant of 5 mass parts and the light calcium carbonate of pesticide carrier of 85 mass parts are mixed uniformly, obtain auxiliary material mixture;

[0029] The active ingredient mixture and the auxiliary material mixture are uniformly mixed to obtain a wettable powder for plant growth regulation.

Embodiment 2

[0031] The test site is in the greenhouse of the base of China Rice Research Institute (Fuyang City, Zhejiang Province), with a temperature of 30°C / 25°C (day / night) and natural light. The rice variety is Chunjiang 119 (conventional japonica variety). The test materials were sown on November 27, 2012, and transplanted on December 23, with 2 cuttings per cluster.

[0032] One week after transplanting of rice and at the peak tillering stage, it was applied twice, each mu was treated with different dosages of the plant growth regulator prepared in Example 1, the liquid volume was 45 liters / mu, and the leaves were sprayed. The main results are shown in Table 1.

[0033] Table 1 Greenhouse rice (transplanted rice) application yield-increasing effect

[0034]

[0035] *Community area = 7 square meters. Different letters in the same column indicate significant difference at the 5% level.

[0036] As can be seen from Table 1, under the test conditions, the plant growth regulator ...

Embodiment 3

[0038] The test site is in the greenhouse of the base of China Rice Research Institute (Fuyang City, Zhejiang Province), with a temperature of 30°C / 25°C (day / night) and natural light. The rice variety is Chunjiang 119 (conventional japonica variety), and the test material was sown on November 25, 2013 (direct-directed rice).

[0039] Apply twice in 28 days after rice sowing and at the peak tillering stage, each acre is treated with the plant growth regulator provided in Example 1, and the liquid amount is 45 liters / mu, and the leaves are sprayed. The main results are shown in Table 2.

[0040] Table 2 The effect of increasing the yield of greenhouse rice (direct-directed rice) application

[0041]

[0042] *Community area = 7 square meters. Different letters in the same column indicate significant difference at the 5% level.

[0043] As can be seen from Table 2, under the test conditions, the plant growth regulator treatment provided in Example 1 showed a dwarfing effect ...

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PUM

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Abstract

The invention provides a plant growth regulating composition for greenhouse rice, which consists of prohexadione calcium and brassinolide. The invention also provides a plant growth regulator for greenhouse rice, which comprises prohexadione calcium, brassinolide and auxiliary materials. The invention also provides a preparation method and application of the plant growth regulator for greenhouse rice. In the present application, prohexadione calcium and brassinolide are used in combination, which can synergize, promote rice tillering, make rice stems short and strong, increase chlorophyll content in leaves, and increase rice yield. Experimental results show that the plant growth regulator provided by the invention has a dwarfing effect on rice in greenhouses, shows an increasing trend on the number of spikes per cluster, seed setting rate and thousand-grain weight of rice, and can significantly increase the yield of rice.

Description

technical field [0001] The invention belongs to the technical field of plant growth regulators, and in particular relates to a plant growth regulator for greenhouse rice, a preparation method and application thereof. Background technique [0002] In order to speed up the progress of research, especially the speed of rice breeding, the greenhouse cultivation of rice has developed rapidly in recent years. Planting rice in a greenhouse can take advantage of the longer period from winter to spring, and add rice materials for breeding or seed production. However, rice plants grown in greenhouses are often relatively weak, and unfavorable conditions such as leggy growth, few tillers, easy lodging, and infection by diseases and insect pests often occur, resulting in fewer ears and smaller ears, lower seed setting rate and thousand-grain weight, and ultimately lead to yield reduction. Therefore, how to cultivate a robust group of greenhouse rice has become a bottleneck that plagues...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/22A01P21/00A01N37/42
Inventor 符冠富陈婷婷陶龙兴杨永杰张彩霞杨雪芹赵霞
Owner CHINA NAT RICE RES INST
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