Method for preventing and controlling tobacco root-knot nematodes

A tobacco root-knot nematode and tobacco technology, which is applied in the field of biological control of agricultural and forestry pests, can solve the problems of poor chemical control effect, difficulty in obtaining better control effect, etc., achieves good control effect and reduces tobacco root-knot nematode disease occurrence and improve the effect of prevention and control

Inactive Publication Date: 2015-11-11
四川省烟草公司攀枝花市公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another reason for the poor effect of chemical control is that most of the current chemical pesticides are ineffective against nematode eggs, and most root-knot nematode pathogens are mixed populations, and the dominant population changes rapidly, so it is difficult to achieve better control effect with conventional chemical control

Method used

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  • Method for preventing and controlling tobacco root-knot nematodes
  • Method for preventing and controlling tobacco root-knot nematodes
  • Method for preventing and controlling tobacco root-knot nematodes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Select 40 mu of tobacco land with the same incidence of tobacco root-knot nematode disease; 20 mu of conventional planting, 20 mu of interplanting tobacco, sun and hemp.

[0017] 1. Sowing seedlings

[0018] 1. Sowing time: Tobacco is sown 50 days before interplanting, and Shuma is sown 20 days before interplanting.

[0019] 2. Sowing ratio: According to the area of ​​synchronous transplanting and interplanting, sow according to the ratio of 1:1 of tobacco: Shuma, and sow 1500 plants of tobacco per mu.

[0020] 3. Seedling raising method: After sowing with floating seedling trays, adopt the management method of tobacco floating seedling raising in the early stage, remove the pool water 7 days before interplanting and carry out wet method for seedling hardening, and spray about 800 times of carbendazim solution on each seedling 2 days before interplanting .

[0021] 2. Transplanting and interplanting method

[0022] 1. Interplanting period: Tobacco and Shuma are inter...

Embodiment 2

[0042] Select 20 mu of tobacco land with the same incidence of tobacco root-knot nematode disease; 10 mu of conventional planting, 10 mu of interplanting of tobacco and hemp.

[0043] 1. Sowing seedlings

[0044] 1. Sowing time: Tobacco is sown 60 days before interplanting, and Shuma is sown 25 days before interplanting.

[0045] 2. Sowing ratio: According to the area of ​​synchronous transplanting and interplanting, sow according to the ratio of 1:0.8 for tobacco: Shuma, and sow 1,500 tobacco plants per mu.

[0046] 3. Seedling raising method: After sowing with floating seedling trays, adopt the management method of tobacco floating seedling raising in the early stage, remove the pool water 7 days before interplanting and carry out moistening method to harden the seedlings, and spray about 800 times of carbendazim solution on each seedling 3 days before interplanting .

[0047] 2. Transplanting and interplanting method

[0048] 1. Interplanting period: Tobacco and Shuma ar...

Embodiment 3

[0062]Choose 30 mu of tobacco land with the same occurrence of tobacco root-knot nematode disease; 15 mu for conventional planting and 15 mu for interplanting of tobacco and sunflower.

[0063] First, sowing seedlings

[0064] 1. Sowing period: Tobacco is sown 57 days before interplanting, and sunflower is sown 20 days before interplanting.

[0065] 2. Sowing ratio: according to the synchronous transplanting and interplanting area, sowing according to the ratio of tobacco:sun and hemp at 1:0.9, and sowing 1500 tobacco plants per mu.

[0066] 3. Seedling raising method: After sowing in the floating seedling tray, the tobacco floating seedling management method was adopted in the early stage. The pond water was removed 6 days before the interplanting and the seedlings were hardened by the moistening method. .

[0067] 2. Transplanting and interplanting method

[0068] 1. Interplanting period: Tobacco and sundew will be interplanted simultaneously in May (the local tobacco tra...

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Abstract

The invention discloses a method for preventing and controlling tobacco root-knot nematodes. The method comprises the following steps: interplanting tobaccos and crotalaria juncea; sowing and culturing seedlings 50 to 60 days before the tobaccos are interplanted, and sowing and culturing seedlings 20 to 25 days before the crotalaria juncea are interplanted; from April to May of every year, transplanting the seedlings of the tobaccos and the crotalaria juncea to carry out synchronous interplanting, wherein the plant-row distance of tobacco plants is 55-65cm and 110-120cm, and the crotalaria juncea are interplanted at the middle positions of the plant distance or the row distance of the tobacco plants. The method disclosed by the invention has the advantages that the crotalaria juncea is used for reducing the occurrence of the disease of the tobacco root-knot nematodes for the first time; the interplanting of the tobaccos and the crotalaria juncea is utilized for preventing and controlling the tobacco root-knot nematodes, so that the preventing and controlling effect is good and the quality of the tobacco leaves is improved; the operation is simple, the practicability is strong, the preventing and controlling effect of the disease of the tobacco root-knot nematodes is improved and the occurrence of the disease of the tobacco root-knot nematodes is reduced.

Description

technical field [0001] The invention belongs to the technical field of biological prevention and control of agricultural and forestry pests, and in particular relates to a method for preventing and treating tobacco root-knot nematodes by interplanting tobacco and hemp. Background technique [0002] Tobacco root-knot nematode is widely distributed in the world. Tobacco root-knot nematode occurs in all major smoking areas in the world. At present, the disease is mainly distributed in Henan, Shandong, Anhui, Yunnan, Guizhou, Sichuan and South China. According to statistics, the loss caused by tobacco root-knot nematode in the world in 1967-1968 reached 682 million US dollars. In recent years, the occurrence area of ​​tobacco root-knot nematode in my country has been increasing year by year, new diseased areas are constantly appearing, and the damage of old diseased areas is constantly increasing. The yield of tobacco fields with common root-knot nematode disease is reduced by 3...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01G13/00
CPCA01G13/00A01G22/00Y02A40/28
Inventor 任伟张瑞平闫芳芳曾庆宾常宁涛杨章明
Owner 四川省烟草公司攀枝花市公司
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