Plant growth conditioner for reducing damage caused by high temperature to rice, and using method and application of plant growth conditioner

A plant growth regulator and plant growth technology, applied in the directions of plant growth regulators, plant growth regulators, botanical equipment and methods, etc., can solve the problems of yield reduction, low seed setting rate of single-season rice, etc., so as to increase rice yield and prevent rice High temperature damage, the effect of promoting root vitality

Active Publication Date: 2014-09-24
CHINA NAT RICE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition to Hubei and Anhui provinces, Jiangsu, Guangdong, Zhejiang, Sichuan, Hunan and other major southern rice-producing provinces also suffered fr...

Method used

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  • Plant growth conditioner for reducing damage caused by high temperature to rice, and using method and application of plant growth conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In 2012, the experimental field of China Rice Research Institute, Fuyang City, Zhejiang Province, variety: Chunjiang 119. During the meiotic stage of rice pollen mother cells (flap leaf pillow distance ± 2-3 cm, or 5-8 days before the beginning of ear), long-term high temperature weather around 35 ° C, spray different concentrations of plant growth conditioners, dosage 30-45 liters / mu, the experimental results are shown in Table 1:

[0026] Table 1. Effects of different weight ratios of gibberellin and salicylic acid on rice yield in high temperature period

[0027] Numbering

Gibberellin mg / L

Salicylic acidmg / L

Plant height (cm)

Yield (kg / mu)

1

0

0

112.74d

654.4b

2

50

15

117.13c

677.4a

3

50

30

116.35c

688.1a

4

50

45

117.16c

678.9a

5

60

30

123.01ab

700.0a

6

70

30

124.58a

678.1a

7

80

30

126.2...

Embodiment 2

[0031] On the basis of the 2012 plot test in Example 1, a large-area comparative test of the mixed agent was carried out at the same test site in 2013. The concentrations of the single components in the mixed drug are shown in Table 2. The period of pesticide application is the meiotic stage of rice pollen mother cells (that is, the distance between flag leaf and leaf pillow + 2-3 cm, or 5-8 days before the beginning of ear), and the long-term high temperature weather of about 35 ° C, set up 8 plots for drug treatment , and the two plots are clear water control, and the plots are converted into yield per mu after harvesting respectively. It can be seen from Table 2 that the average yield per mu of drug treatment is 670.3 kg, and the average yield per mu of clear water control is 612.0 kg, and the average yield of drug treatment is 9.2% higher than that of clear water control. Wherein recommended proportioning (processing 5, processing 6 in table 2), promptly " gibberellin 60mg...

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Abstract

The invention discloses a plant growth conditioner for reducing damage caused by high temperature to rice, and a using method and application of the plant growth conditioner. The conditioner comprises gibberellin and salicylic acid, wherein the weight ratio of gibberellin to salicylic acid is (0.5-1.5):(0.15-0.6). The conditioner can also comprise chitosan oligosaccharide according to a certain ratio. When the conditioner is used, an aqueous solution form is adopted, wherein an aqueous solution is prepared from 50 to 150mg/L of gibberellin, 15 to 60mg/L of salicylic acid and 50 to 200mg/L of chitosan oligosaccharide, and is applied to leaves in a spraying way during the meiosis stage of pollen mother cells of rice, and 30 to 45 liters of aqueous solution is applied to each acre. The plant growth conditioner can be applied to reduce the damage caused by high temperature to rice, and is suitable for popularization and application in a rice culturing region on the middle and lower reaches of Changjiang River, particularly in a region at which the temperature in a flowering period is always high, and high and stable yield of rice is ensured.

Description

technical field [0001] The invention relates to the field of plant growth conditioners, in particular to a plant growth conditioner for alleviating rice high-temperature damage, its use method and application. Background technique [0002] According to statistics, among the losses caused by various natural disasters, meteorological disasters such as catastrophic weather, climate and agricultural meteorological disasters account for more than 60%. Rice yields have been particularly affected. [0003] With the acceleration of the global industrialization process, the frequency of abnormal temperature hazards to rice production is increasing. As a result, rice production areas are often affected by heat damage at different development stages of rice, especially during the heading, flowering and filling stages of rice. production cuts. [0004] In 1971, the occurrence of high temperature and heat damage caused the loss of more than 2 billion kilograms of rice in the middle and...

Claims

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Application Information

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IPC IPC(8): A01N43/12A01N43/16A01P21/00A01G13/00A01N37/40
Inventor 陶龙兴符冠富陈婷婷杨永杰张彩霞杨雪芹
Owner CHINA NAT RICE RES INST
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