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Method for preventing rice planthopper of paddy rice

A rice planthopper and rice technology, applied in the agricultural field, can solve problems such as no relevant reports, and achieve the effects of delaying the development of resistance, reducing adverse effects, and improving control effects

Inactive Publication Date: 2017-12-01
GUANGXI NANNING YITU BIOLOGICAL SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no relevant report on the control of rice planthoppers with the combination of pymetrozine and methyl jasmonate

Method used

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  • Method for preventing rice planthopper of paddy rice
  • Method for preventing rice planthopper of paddy rice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: Indoor Toxicity Determination of Pymetrozine, Methyl Jasmonate and Their Mixtures to Rice Brown Planthopper

[0016] Test object: rice brown planthopper (Nilaparvata lugens (Stal)): collected from Nanning, Guangxi, and reared the second generation indoors.

[0017] Test method: refer to the "People's Republic of China Agricultural Industry Standard NY / T 1154.11-2008", using the rice stem dipping method. Pull out the strong rice plants from the tillering stage to the early booting stage, wash them, cut them into 15 cm long rooted rice stems, and put them in a group of 3 plants, and dry them in a cool place until there is no water mark on the surface. Soak the rice stems in the diluted medicine for 30 seconds, take them out and dry them, wrap the roots with soaked absorbent cotton and put them into the culture cups, absorb the 3rd instar mid-stage nymphs and put them into the culture cups, 20 heads per cup, set the soaking Clear water was used as the blank con...

Embodiment 2

[0029] Embodiment 2: 30% pymetrozine methyl jasmonate suspension concentrate

[0030] Formula: Weigh 25% of pymetrozine, 5% of methyl jasmonate, 2.0% of alkylaryl polyoxypropylene polyoxyethylene ether (dispersant), 3.5% of sodium polynaphthaldehyde sulfonate (wetting agent) , ethylene glycol 2.5% (antifreeze agent), xanthan gum 0.8% (thickener), silicone 0.3% (defoamer), and deionized water to make up to 100%.

Embodiment 3

[0031] Embodiment 3: 10.5% pymetrozine methyl jasmonate suspension concentrate

[0032] Formula: Weigh 10.0% of pymetrozine, 0.5% of methyl jasmonate, 1.8% of alkylaryl polyoxypropylene polyoxyethylene ether (dispersant), 3.5% of sodium polynaphthaldehyde sulfonate (wetting agent) , ethylene glycol 1.5% (antifreeze), xanthan gum 0.8%, 0.3% silicone defoamer, deionized water to make up to 100%.

[0033] The preparation method of Examples 1-3 is as follows: mix each component uniformly according to the ratio of the formula, grind and high-speed shear to obtain the composition containing pymetrozine·methyl jasmonate, and the dosage form is a suspension concentrate.

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Abstract

The invention relates to a method for preventing rice planthopper of paddy rice. The method comprises the following steps: mixing a pesticide preparation with active ingredients such as pymetrozine and jasmonic acid methyl ester, mixing with water, and then uniformly spraying on an affected paddy rice plant until leaves are wetted. In the pesticide preparation, a the weight ratio of pymetrozine to jasmonic acid methyl ester is (5 to 20): 1. The method is obvious in synergistic effect, can effectively controlling the harm of the rice planthopper, can reduce the consumption of the pesticide, can improve the prevention effect, can reduce the adverse influence on the environment and the pesticide residue, and can postpone the resistance development of injurious insects.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a method for controlling rice planthoppers. Background technique [0002] Rice planthopper is one of the main pests of rice. The damage caused by rice planthopper to rice, besides directly piercing and sucking the juice, hindering the growth, and in serious cases, the rice clusters will wither, and even the dead stalks of the whole field will fall down. Stabs plants, destroys transporting tissues, hinders nutrient transport and spreads viral diseases. [0003] Chemical control has always been the main means of controlling rice planthoppers. However, one of the main problems faced by chemical control over the years is the problem of pest resistance. Pests with many generations, large reproduction, and overlapping generations have a rapid rise in antibody antibodies. Rice planthoppers, leafhoppers, whiteflies, etc. are such pests. At present, brown planthoppers in many part...

Claims

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Application Information

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IPC IPC(8): A01N43/707A01N37/42A01P7/04A01G16/00A01G7/06A01G22/22
CPCA01G7/06A01N37/42A01N43/707A01G22/22A01N2300/00
Inventor 邓付圆韦恒友杨旭新闭广进吴宝国谭永寿申妍韦玺梁进旭
Owner GUANGXI NANNING YITU BIOLOGICAL SCI & TECH CO LTD
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