Method for promoting growth of parent seedlings in cold frames and suppressing seedling emergence of seeds falling to ground

Abstract

The invention discloses a method for promoting growth of parent seedlings in cold frames and suppressing seedling emergence of seeds falling to ground. The method specifically includes the following steps that (1) sowing holes are manufactured in black mulching films; (2) surfaces of the cold frames are covered with the black mulching films with the manufactured sowing holes, parent seeds are sowed according to the positions of the sowing holes, and the mulching films are covered with soil after sowing. Practice has proved that every time a repeated experiment is carried out by the adoption of the method, high-quality and robust parent material seedlings can be obtained from experimental groups covered with the black mulching films in the cold frames, and seedling emergence of the seeds falling to ground is obviously suppressed. The method provides technological support for improvement on purity of vegetable seeds.

Description

technical field [0001] The invention belongs to the field of vegetable cultivation and relates to a method for promoting the growth of parental seedlings in sun beds and inhibiting the emergence of fallen seeds. Background technique [0002] According to the statistics of the Ministry of Agriculture in 2006, the sown area and total output of Chinese cabbage in my country rank first among all kinds of vegetables. The annual planting area of ​​Chinese cabbage reaches 2623.7khm 2 , accounting for 14.4% of the country's vegetable sown area, with an output of 105.063 million tons, accounting for 18% of the country's total vegetable output. Along with the increase of sown area of ​​cruciferous vegetables such as Chinese cabbage and pak choy (rape), the production area of ​​first-generation hybrid seeds also expanded thereupon. The production of hybrid seeds is particularly important, not only related to the quality and vitality of cabbage varieties, but also related to the benef...

AI Technical Summary

Problems solved by technology

2) Because the covering soil is taken from the pile of abandoned cabbage stalks and seed pods or the livestock manure that feeds on straw and seed pods is used, the seeds are also returned to the Yang bed, resulting in the occurrence of fallen seeds

3) Although Yangqi is only used as a nursery site and does not produce commercial seeds, but because the remaining small amount of parental seedlings in Yangqi are not removed, pulled out and self-crossed or hybridized, there are still seeds in Yangqi

Therefore, falling seeds greatly increases the workload of seedbed removal and flowering removal

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