Method of nursing and propagating ricefield predatory enemy insects

Abstract

The invention discloses a method of nursing and propagating ricefield predatory enemy insects. In rice transplanting stage, nectariferous plants, such as okra and wild chrysanthemum, are grown in peripheral ridges of a ricefield, and meanwhile the rice field is plowed; okra is planted i holes at intervals of 1.8-2.4 m; wild chrysanthemum is intercropped between every two holes of the okra; planting furrows of the wild chrysanthemum are 0.6-0.8 m in spacing; a combination farmland eco-system with co-existing rice and nectariferous plants is established. Water and fertilizer management for fields is carried out for rice production according to normal agricultural operations of the local site. Two years of actual field test applications prove that the quantity of enemy insects, such as spiders, ladybirds and predatory true bugs, in the ricefield eco-system is increased evidently, which is important to the ecological regulation for rice pests; the bio-control effect of enemies against pests can be exerted effectively; the usage of pesticides is reduced; sustainable development of agricultural health is promoted; the method has significant economic, social and ecological benefits.

Description

technical field [0001] The invention belongs to the technical field of agricultural pest control and particularly relates to a method for conserving and multiplying predatory natural enemy insects in paddy fields. Background technique [0002] Biodiversity plays an important role in ecosystem stability. Higher biodiversity is conducive to improving the anti-interference ability of the ecosystem. The health and stability of the paddy ecosystem is a key factor in the sustainable control of pests. The stable foundation of the system is the guarantee for the implementation of ecological control of rice pests. With the large-scale promotion of high-yield and high-quality single rice varieties and the use of a large number of chemical pesticides, the biodiversity in the rice field ecosystem continues to be destroyed, resulting in frequent and rampant pest damage. In order to control the damage caused by pests and protect food production, more Relying on chemical control, the rice...

AI Technical Summary

Problems solved by technology

With the large-scale promotion of high-yield and high-quality single rice varieties and the use of a large number of chemical pesticides, the biodiversity in the rice field ecosystem continues to be destroyed, resulting in frequent and rampant pests. In order to control the occurrence of pests and protect food production, we can only do more. Relying on chemical control, the rice field ecosystem is in a vicious circle of continuous destruction, and it also directly causes a series of problems such as environmental pollution.

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