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A method for increasing natural enemies of rice field pests by planting ramie on paddy field ridges

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

Inactive Publication Date: 2017-01-25
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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  • A method for increasing natural enemies of rice field pests by planting ramie on paddy field ridges
  • A method for increasing natural enemies of rice field pests by planting ramie on paddy field ridges
  • A method for increasing natural enemies of rice field pests by planting ramie on paddy field ridges

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Embodiment Construction

[0009] 1 Materials and methods

[0010] 1.1 Test location

[0011] The test was carried out on a natural paddy field 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, annual rainfall 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 stubble is a fallow field.

[0012] 1.2 Experimental design

[0013] Three plots are randomly selected for each of the conventional paddy field and the terraced paddy field. Each plot (paddy field) is 65m long, 26.5m wide, and has an area of ​​1...

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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 natural enemies of rice field pests by planting ramie on paddy field ridges. Background technique [0002] In recent years, the simplification of the diversity of species and varieties in the rice field ecosystem has led to the large-scale planting of long-term monoculture rice, resulting in the high dependence of rice on pesticides and chemical fertilizers, the decline in resistance to diseases, insect pests and weeds, and environmental pollution. The reduction of biodiversity in the rice field ecosystem is one of the important reasons for the outbreak of rice planthoppers and other pests. The paddy fields and the weeds on the ridges around the paddy fields have more common predatory natural enemy species, and the weeds on the ridges around the paddy fields can provide shelter for the predatory arthropods that migrated from the paddy fields. Instead of food, i...

Claims

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Application Information

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Patent Type & Authority Patents(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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