A cultivation method for crop rotation prevention and control of banana plant pathogenic nematode disease

Abstract

The invention provides a crop rotation cultivation method for prevention and control of banana plant pathogenic nematodosis. According to the method, plantation is performed in a mode of crop rotation of bananas, rice and papayas; first the rice is planted in a banana field with the banana plant pathogenic nematodosis incidence being over 50%, the papayas are planted after the rice is harvested, the bananas are planted again after the harvesting of the papayas, and measures of returning rice straw and papaya leaves and residues to the field are taken. The ecological environment of soil is adjusted through root exudates of the rice and the papayas or residue decomposing products, so that the reproduction of the banana plant pathogenic nematodosis is restrained, and the soil nematode community structure is improved. Through more than two cycles of the crop rotation cultivation method, the banana plant pathogenic nematodosis incidence can be remarkably reduced and the growth of the bananas is promoted, and the crop rotation cultivation method is simple to operate, environmentally friendly and suitable for large-area popularization and application.

Description

technical field [0001] The invention belongs to the technical field of agricultural cultivation, and in particular relates to a cultivation method for preventing and controlling banana plant pathogenic nematode disease by crop rotation. Background technique [0002] In recent years, plant pathogenic nematode diseases have spread rapidly in southern my country, seriously hindering the healthy development of the modern banana industry and making banana production face severe challenges. The disease has a wide range of transmission routes and can be transmitted through water, soil, seedlings and other media. Some banana orchards in my country have been destroyed. Due to the limitation of climatic conditions, the arable land for planting bananas in my country is positively limited. If no effective control measures are taken, my country's banana industry will face a severe situation. [0003] While being harmed by plant pathogenic nematodes, the ecological environment of bananas...

AI Technical Summary

Problems solved by technology

[0003] While being harmed by plant pathogenic nematodes, the ecological environment of bananas in my country is deteriorating year by year. Due to the year-by-year decrease of arable land, the drive of economic interests and the influence of many factors such as production conditions, the continuous cropping period of bananas continues to increase, and some banana orchards have been continuously cropped for as long as For more than 20 years, long-term application of chemical fertilizers, pesticides and insecticides will lead to deterioration of soil physical and chemical properties, reduction of organic matter content, nutrient imbalance, reduction of types and quantities of beneficial microorganisms, continuous accumulation of toxic and harmful substances, and continuous cropping obstacles, resulting in slow growth of bananas , the growth period is prolonged, the stress resistance is reduced, and the occurrence of diseases and insect pests is serious, which in turn affects the yield and quality of bananas.

[0004] At present, physical methods, chemical agents, and the cultivation of new disease-resistant varieties can temporarily alleviate the pathogenic nematode disease of banana plants, but these methods also have many disadvantages, such as the long time required for flooding and fallow, and the lack of access to land resources. The rational use of chemicals such as lime and pesticides will have adverse effects on the soil structure, causing soil compaction and environmental pollution, which is not conducive to the sustainable development of agriculture, and the residue of chemical substances in the soil will cause harmful substances in banana fruits to exceed the standard At present, the newly cultivated disease-resistant varieties still have problems such as long growth cycle, low resistance level, and poor quality; the disease prevention speed of biological control is slow and the effect is not stable. Therefore, ecological control has gradually become a new direction for the control of banana plant pathogenic nematodes

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