Method for screening variety with relatively-high phosphor utilization efficiency from multiple cut-flower chrysanthemum varieties

Abstract

The invention belongs to the technical field of plant cultivation and seedling and discloses a method for screening a variety with relatively-high phosphor utilization efficiency from multiple cut-flower chrysanthemum varieties. The method comprises the following steps of: a, acquiring a rooted spike; b, determining the screening concentration, respectively planting the multiple cut-flower chrysanthemum varieties into a plurality of sand culturing tanks, filling nutrient fluids with different concentrations, calculating a variable coefficient of dry weight of each treatment plant and selecting the treatment concentration with the maximum variable coefficient as the screening concentration; and c, carrying out sand culture screening, to be specific, setting two treatments on normal phosphor and low phosphor (the screening concentration determined by the step b), determining a proper screening index by difference significance and relevance analysis of each index; and by adopting a system clustering method, classifying the low-phosphor resistance of the cut-flower chrysanthemum and finally determining a variety with highest phosphor utilization efficiency and a variety with lowest phosphor utilization efficiency. According to the method disclosed by the invention, cut-flower chrysanthemum varieties can be finally screened and the reference and basis for cut-flower chrysanthemum cultivation, phosphor nutrition research and variety breeding work are provided.

Description

technical field [0001] The invention belongs to the technical field of plant cultivation and breeding, and relates to a method for screening varieties with relatively highest phosphorus utilization efficiency from a plurality of cut chrysanthemum varieties. Background technique [0002] The flower planting industry is a representative of precision agriculture. Plant nutrition regulation is an important part of precision agriculture. The development of high-efficiency nutritional flower varieties will help the realization of precision flower cultivation. At the same time, controlling the amount of fertilizer has also become a guarantee for flowers to obtain international certification and enter the international market. Cut chrysanthemum is one of the four major cut flowers in the world and occupies an important position in the flower planting industry. Therefore, it is necessary to study the nutrient utilization ability of cut chrysanthemum. [0003] Phosphorus is one of th...

AI Technical Summary

Problems solved by technology

In addition, the chemical phosphorus fertilizer applied to the soil is easily absorbed and fixed by the soil, and the seasonal utilization rate of phosphorus fertilizer is only 10% to 25%. A large amount of unused phosphorus stays in the soil for a long time or temporarily, which will not only cause phosphorus Waste of resources, exacerbating secondary salinization of soil, but also increasing the risk of pollution caused by leaching loss

Cut chrysanthemums are generally cultivated in greenhouses with a high multiple cropping index. In order to maintain high yield and high quality, a large amount of chemical fertilizers have to be applied. This will not only cause waste of fertilizers and obstacles to continuous cropping of the soil, but also cause more serious environmental pollution than large fields.

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