Seedling raising method for pigment marigold

Abstract

The invention discloses a seedling raising method for pigment marigold. The method comprises the following steps of: 1, strict seed treatment; 2, preparation of a nursery bed covering; 3, seedling raising in a shoot for cutting nursery; 4, management over the shoot for cutting nursery; and 5, cutting seedling raising in a cutting nursery. According to the method, the problem of climatic barriers to seedling raising nurseries in the construction of industrial development bases for the pigment marigold in two high mountain regions in the middle and upper reaches of the Yangtze River is solved, and in addition, the problem that the pigment marigold is excessively grown in a seedling stage, and the growth of seedlings is not required to be restrained after the seedlings are transplanted or that the seedlings are passively planted provisionally when the seedlings cannot be timely transplanted due to the climate is effectively solved; seedling cost is saved; the per unit area yield of flowers is improved, and an upside-down condition is effectively prevented; and pest and disease damage is remarkably alleviated.

Description

technical field [0001] The invention relates to a plant seedling raising method, in particular to a pigment marigold seedling raising method. Background technique [0002] In the Ergao mountain area (800-1200m above sea level) in the middle and upper reaches of the Yangtze River, due to fertile soil (organic matter ≥ 1.8%), humid air (annual average ≥ 75%), large temperature difference between day and night (day and night ± 5-8 ℃), long summer drought period ( July-August, marigold flowering period), the average yield of marigolds produced is 3500kg / mu, and the average lutein content is 20-22‰, which belongs to the dominant planting area of ​​pigment marigolds. [0003] However, the difficulty in developing the pigment marigold industry in this area is seedling cultivation and pre-management. Because in the 70 days from late March to late May in this area, rainy days account for 60-85%; the frequency of cold waves is 1 time / 5-7 days, and the time to pass 15°C is generally f...

AI Technical Summary

Problems solved by technology

Therefore, if heat preservation is not used, it will inevitably affect the sowing date and yield.

Adopt heat preservation measures to raise seedlings, often because the seedlings cannot be transplanted in time to form tall seedlings and leggy seedlings, the task of seedbed management is heavy, and after transplanting to the field, the quality of seedlings is low, and diseases frequently occur

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