New method for raising seedling of sweet potato stem over winter in greenhouse

Abstract

The invention relates to a novel method for green house wintering breeding of sweet potato stems, which solves the problems that in the traditional sweet potato breeding, the potato seeds are required to be preserved through wintering, storage cellars are occupied and the facility consumption is increased, the breeding cost is high, the mature seedlings are weak, and the seedlings have rhizoid and are easily infected. Through a brand-new special sweet potato cultivation method, sweet potato seeds which have no rhizoid, can be named as semi-virus-free seedlings, reduce the generation of root rot and nematode disease, have strong, green and thick stems, strong disease-resistant ability and high survival rate, reach the level of special grade, achieve yield increase of 750 to 1000g per Chinese acre, come into the market early, and have good economic benefit, can be cultured, and are especially suitable for large-area planting in the North of China.

Description

technical field [0001] The invention belongs to the technical field of sweet potato cultivation, and in particular relates to a new method for overwintering seedling cultivation of sweet potato stems and vines in greenhouses. Background technique [0002] As far as the inventor knows, the currently known sweet potato cultivation method is to select seed potatoes from the sweet potatoes harvested in the previous year, and to plant seedlings in the spring in a naked way. Traditional seedling cultivation must first solve the problem of seed potato overwintering preservation, which takes up manpower. , material resources, and increase the consumption of facilities such as storage and cellars, which increases the cost of seedling cultivation. The cultivated seedlings are weak, and the stems are thin and weigh less than 500 grams per 100 trees, which cannot reach advanced standards. Entrained root rot and nematode disease, the survival rate is not high, and the slow seedling perio...

AI Technical Summary

Problems solved by technology

[0002] As far as the inventor knows, the currently known sweet potato cultivation method is to select seed potatoes from the sweet potatoes harvested in the previous year, and to plant seedlings in the spring in a naked way. Traditional seedling cultivation must first solve the problem of seed potato overwintering preservation, which takes up manpower. , material resources, and increase the consumption of facilities such as storage and cellars, which increases the cost of seedling cultivation. The cultivated seedlings are weak, and the stems are thin and weigh less than 500 grams per 100 trees, which cannot reach advanced standards. Entrained root rot and nematode disease, the survival rate is not high, and the slow seedling period is more than 10-15 days. At the same time, there will be the phenomenon of dead leaves when changing seedlings, which greatly shortens the growth period and affects the growth.