Koelreuteria paniculata cold region seedling raising method

Abstract

The invention relates to a koelreuteria paniculata cold region seedling raising method which comprises the steps of seed collection, seed stratification treatment, germination accelerating treatment,nursery land preparation, sowing, seedling stage management and the like. According to a seed stratification treatment, appropriate stratification treatment conditions are provided according to the characteristic of adaptation to local conditions, after-ripening of koelreuteria paniculata seeds is completed step by step for 5 months of stratification treatment, the dormancy characteristic of the seeds is effectively overcome, and the germination capacity of the seeds is improved. Germination accelerating treatment is combined, high-temperature hot water and an ABT rooting powder solution are used for soaking in sequence, seed recovery is accelerated, then the seeds are mixed with wet sand and aired until the seeds crack, and the germination rate is increased. After sowing, a shading net isused for covering at a budding stage to prevent seedlings from being sunburnt, monopotassium phosphate serves as an efficient phosphorus-potassium compound fertilizer, the disease and pest resistanceof the seedlings is improved, excessive growth is prevented, and the survival rate of the seedlings is improved through scientific and reasonable seedling management. The seedling raising problem ofkoelreuteria paniculata in cold regions, especially at the middle portion in Jilin Province, is solved.

Description

technical field [0001] The invention relates to a plant breeding method, in particular to a method for growing seedlings of eucalyptus in cold regions. Background technique [0002] Luan tree is a deciduous tree or shrub, belonging to Sapindaceae and the genus Luania; it is mainly distributed in the lower reaches of the Yellow River Basin and the Yangtze River Basin in my country. Due to the cold winter in the Northeast, it is relatively rare in the north of Liaoning. The eucalyptus has a beautiful crown shape, and its flowers and fruits have high ornamental value. It is an excellent landscaping tree species and is widely used in North China, Central China and East China. , eastern regions) have weak reproductive ability, very low emergence rate, very slow growth, weak wintering ability of seedlings, and severe freezing damage, so relying on their own reproductive ability cannot meet the greening needs. The breeding ability and ecological adaptability of eucalyptus in cold ...

AI Technical Summary

Problems solved by technology

The eucalyptus has a beautiful crown shape, and its flowers and fruits have high ornamental value. It is an excellent landscaping tree species and is widely used in North China, Central China and East China. , eastern regions) have weak reproductive ability, very low emergence rate, very slow growth, weak wintering ability of seedlings, and severe freezing damage, so relying on their own reproductive ability cannot meet the greening needs. The reproductive ability and ecological adaptability of eucalyptus in cold regions requires the development and research of effective seedling breeding methods for eucalyptus in cold regions

At present, there is no report on the technology of raising seedlings of eucalyptus in cold regions. The reports on the technology of raising seedlings of eucalyptus are mainly distributed in North China and the Yangtze River Basin. Sand storage or dry storage methods are adopted, the germination rate of seeds treated by these methods is low, and the sowing rate is large (50-100g / m 2 ), especially the dry storage method has a lower seedling emergence rate in the current year, and generally germinates in the second year, which is not suitable for breeding in the cold regions of Northeast China; the lack of standardized seedling management in the breeding process, and no cold-proof and overwintering management technology, which makes the seedlings in the cold Overwintering in cold areas will inevitably lead to severe freezing damage, resulting in seedling failure

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