Carrier plant system for protecting and increasing number of rice field rice planthopper parasitic wasps

A carrier plant system and carrier plant technology are applied in the field of crop pest biological control, which can solve the problems of excessive use of chemical pesticides, excessive pesticide residues in rice, and ecological imbalance in rice fields, and achieve the effects of improving the control effect, low cost and reducing use.

Inactive Publication Date: 2014-03-05
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the existing rice planthopper control, the present invention provides a carrier plant system for protecting and improving the rice planthopper parasitoids in rice fields. There are many serious problems such as excessive pesticide residues in rice, environmental pollution, etc., by planting carrier plants (grass grass or wild grass) beside the rice fields, the rice planthopper parasitoids are continuously propagated, and the parasitoids of the rice planthopper are used as a parasitoid species bank to provide bee sources for the rice fields and improve the quality of the rice fields. The Population Quantity of Parasitoid Wasp and Its Biological Control Effect on Rice Planthopper

Method used

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  • Carrier plant system for protecting and increasing number of rice field rice planthopper parasitic wasps
  • Carrier plant system for protecting and increasing number of rice field rice planthopper parasitic wasps
  • Carrier plant system for protecting and increasing number of rice field rice planthopper parasitic wasps

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Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1, the investigation of the number of populations of Trichogramma and Trichogramma on weeds in the rice field ecosystem

[0025] In 2012 and 2013, the survey and sampling of rice planthopper parasitoids (M. japonica and Trichogramma) on common grass weeds in rice field ecosystems were carried out in Yinxian County, Ningbo, Zhejiang Province, and Wucheng District, Jinhua City, respectively. From March to May, the winter slack period is used for sampling, once every half month, a total of 4 times. The rice was sampled during the rice growth period from June to October, and the samples were taken once a month, a total of 5 times. When sampling, Qi Ni cuts various gramineous weeds, takes them back to the room and weighs them, and then puts them in a conical cage, which is covered with black cloth. Collect the eclosion parasitoids and collect them once a day until all the parasitoids have emerged. The parasitic wasp specimens were preserved with 70% alcohol, and...

Embodiment 2

[0031] Example 2 Effects of Different Nitrogen Fertilizer Levels on the Growth, Development and Population Reproduction of Pseudo-Nilaparvata lugens on P.

[0032] Different levels of nitrogen fertilizer (0, 125, 250kg / ha) were applied to the potted corngrass and freegrass. A single plant of corngrass and freeweed was placed in a test tube with nutrient solution, and pseudo-N. lugens was raised in a single tube. One newly hatched worm was connected to each tube, and the molting and survival conditions were recorded every day. After eclosion, the weight of the first feathered female was weighed, and the male and female were paired to lay eggs, and the life span and egg production were recorded. When the eggs were completely hatched, the number of hatched eggs was recorded, and the unhatched eggs were dissected to record the hatching rate. Based on the above observations of adults, eggs and nymphs, the population trend index of the two species of BPH on different plants was cal...

Embodiment 3

[0039] Embodiment 3, lifespan, oviposition and reproduction of brown planthopper and pseudo brown planthopper on different plants

[0040] Nitrogen fertilization levels of rice (variety TN1), corngrass and free grass are all 250kg / ha, potted seedlings are covered with polyethylene cages, and each cage is inserted with one adult female and one male adult of the same species of brown planthopper or pseudo brown planthopper. For pairing, more than 15 pairs were observed repeatedly for each plant. After connecting the test worms, observe and record their survival every day. After the nymphs began to hatch, the hatched nymphs were counted every other day. After no nymphs hatched until 5 days, the number of unhatched eggs on the plants was observed and recorded under a dissecting microscope. Calculate the total egg production (the sum of the number of hatched nymphs and unhatched eggs), the hatching rate of eggs and the life span of male and female adults.

[0041] For plants capa...

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Abstract

The invention discloses a carrier plant system for protecting and increasing the number of rice field rice planthopper parasitic wasps. The carrier plant system comprises three parts, namely, carrier plants, substitute hosts and the parasitic wasps, wherein the carrier plants are grassy weed blighted grain grass and clubhead cutgrass herbs, the substitute hosts are main phytophagous insect false brown planthopper on the grassy weed blighted grain grass and the clubhead cutgrass herbs, and the parasitic wasps are mainly anagrus nilapartvatae pang et wang. The system servers as a species pool of natural enemies of the rice planthopper and used for unceasingly breeding the parasitic wasps, the biological control efficiency of the rice planthopper can be effectively improved, and the number of the times of using pesticides can be lowered by 2 to 3 in one season. The system has the advantages of being long in action time, easy to operate and high in practicability.

Description

technical field [0001] The invention relates to the technical field of biological control of crop pests, in particular to a carrier plant system for protecting and improving rice planthopper parasitoids in paddy fields. Background technique [0002] The banker plant system is a recently developed new biological control technology, also known as the open-rearing system, which mainly includes banker plants, alternative food and beneficial organisms (beneficial) three elements, a complete carrier plant system includes at least two of the basic elements. Among them, the carrier plant is the most important element, which is generally a non-target cultivated or wild crop, but it can also be one or several target crops or similar plants. It is mainly used to raise alternative hosts or prey to provide food resources to beneficial organisms, or the carrier plant itself is directly used to raise beneficial organisms (such as predatory natural enemies). At present, with the in-depth ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G13/00A01G1/00A01K67/033
Inventor 郑许松吕仲贤朱平阳徐红星刘桂良王国荣张发成陈桂华杨亚军田俊策
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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