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Method for planting ramie on rice field ridges to increase natural enemies of insect pests in rice field

A technology of natural enemy of pests, ramie, applied in the field of agriculture

Inactive Publication Date: 2015-07-15
HUNAN AGRICULTURAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for increasing the natural enemies of rice field pests by planting ramie on the paddy field ridge in view of the series of problems caused by the simplification of species and variety diversification in the existing paddy field ecosystem, so as to change the rice field ecosystem. Interrelationship between pests and natural enemies to improve the control of natural enemies on pests

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  • Method for planting ramie on rice field ridges to increase natural enemies of insect pests in rice field
  • Method for planting ramie on rice field ridges to increase natural enemies of insect pests in rice field
  • Method for planting ramie on rice field ridges to increase natural enemies of insect pests in rice field

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Embodiment Construction

[0009] 1 Materials and methods

[0010] 1.1 Test site

[0011] The experiment was carried out on a natural mound of paddy fields with uniform fertility in Wulong Community, Beisheng Town, Liuyang City, Changsha, Hunan Province. The area has a humid subtropical monsoon climate, with an annual average temperature of 16-18°C, an active accumulated temperature of ≥10°C of 5000-5500°C, and a frost-free period of 260°C. -320d, the annual rainfall is 1200-1500mm. The soil type is red-yellow mud paddy soil developed from Quaternary red clay, soil organic matter 35.51g / kg, total nitrogen 1.80g / kg, total phosphorus 0.90g / kg, total potassium 12.21g / kg, available nitrogen 150.02mg / kg , available phosphorus 30.48mg / kg, available potassium 137.72mg / kg, the previous crop was a leisure field.

[0012] 1.2 Experimental Design

[0013] Three blocks of conventional paddy field and ridge-cropped terraced paddy field were randomly selected. Each plot (rice field) was 65m long, 26.5m wide and 17...

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Abstract

The invention discloses a method for planting ramie on rice field ridges to increase natural enemies of insect pests in a rice field. Ramie is planted on the ridges around the rice field, varieties of the ramie are Xiangzhu 3# and Zhongzhu 1#, ramie stocks of ramie of second instar and older are planted at plant intervals of 35 to 50cm, the ramie is planted within 10 to 30 days after the transplantation of rice, and the rice field is managed according to the normal level. Two-year field tests show that by the ramie ridges, the species and the individual number of arthropods are increased by 20 percent and 17 percent respectively, the individual number of the natural enemies of the insect pests, such as spiders and parasitic wasps, are increased by 14 percent and 31 percent respectively, and great effects on the storage and the development of the species of the natural enemies of the insect pests in the rice field are achieved.

Description

technical field [0001] The invention relates to the field of agriculture, in particular to a method for increasing the natural enemies of rice field pests by planting ramie on the ridges of rice fields. Background technique [0002] In recent years, the simplification of species and variety diversity in the rice field ecosystem has led to the large-scale planting of long-term single rice crops, which has led to the high dependence of rice on pesticides and chemical fertilizers, reduced resistance to pests and weeds, and environmental pollution. One of the important reasons for the outbreak of rice planthoppers and other pests is the reduction of biodiversity in paddy ecosystems. The paddy fields and the surrounding ridge weeds have many common predatory natural enemy species. The ridge weeds around the rice fields can provide shelter for the predatory arthropod natural enemies that migrated from the rice fields, not only for the natural enemies. Instead of food, it can also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01M99/00
Inventor 佘玮黄璜崔国贤杨瑞芳
Owner HUNAN AGRICULTURAL UNIV
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