Tobacco seedling early planting method with green protection

Abstract

The invention discloses a tobacco seedling early planting method with green protection. The method is characterized in that planted tobacco leaves are regarded as a staple crop, through planting of hairy vetches at first, green protection is achieved, the soil temperature is stabilized, aphides are prevented, soil moisture is maintained, chloride ion absorption of tobacco plants is reduced, and potash fertilizer and nitrogen fertilizer absorption during growing is increased. The method includes the steps that in the early stage (from the end of April to the end of May) after tobacco seedling transplanting, under the condition that thin films are not used, the effects are achieved that the soil temperature of tobacco plant root areas is stabilized, the aphides and the tobacco mosaic are prevented, and early planting with green protection is achieved; the transplanting time is advanced, the times of formation, growth, ripening, harvesting and curing of the tobacco leaves are shifted to an earlier period when the ecological conditions such as illumination, temperature and moisture are the best; ripening and harvesting are not delayed, and low temperature in the late period is avoided; in June, dead hairy vetches cover the ground between tobacco furrows, so that weed germination is controlled, and potash fertilizer and nitrogen fertilizer absorption during growing is increased; turning and pressing are conducted after tobacco harvesting, so that organic materials in soil are increased, and the microenvironment of the tobacco soil is improved; the method has the advantages that residual agricultural films do not exist, and herbicide is not used, so that the environment is not polluted.

Description

technical field [0001] The invention belongs to the technical field of tobacco cultivation, and in particular relates to a green protection and early planting method for tobacco seedlings, which mainly relates to the environmental conservation and cultivation of tobacco plants in the early stage of growth in tobacco fields. Background technique [0002] The transplanting of flue-cured tobacco is mainly covered with plastic film, which is divided into two methods: transplanting small tobacco seedlings under the film and transplanting conventional tobacco seedlings on the film. There are the following disadvantages in film-covered transplanting: it is difficult to remove weeds under the film in time; the tobacco plants are exposed between the rows, and the water is easily lost, and the excessive chloride ions caused by repeated irrigation will affect the quality of the tobacco leaves; Potassium and nitrogen fertilizer absorption; under-film seedlings require high ventilation m...

AI Technical Summary

Problems solved by technology

There are the following disadvantages in film-covered transplanting: it is difficult to remove weeds under the film in time; the tobacco plants are exposed between the rows, and the water is easily lost, and the excessive chloride ions caused by repeated irrigation will affect the quality of the tobacco leaves; Absorption of potassium and nitrogen fertilizers; under-film seedlings have high technical requirements for ventilation management, and are prone to high-temperature burnt seedlings

[0005] The core production areas of Luxiang tobacco leaves are transplanted late, and the growth of tobacco plants is not well matched with the ecological conditions such as light, temperature, and water; after transplanting, the temperature is unstable and low temperature occurs in the middle, and tobacco virus diseases are prone to occur after aphid damage; drought occurs for a long time , unable to absorb the nitrogen fertilizer with high soil base content in time, the maturity of tobacco leaves is delayed, the tobacco leaves are thicker; the temperature in the late stage of maturity is too low, etc.

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