Sweet potato ultra-temperature greenhouse seedling method

Abstract

The invention discloses a sweet potato ultra-temperature greenhouse seedling method. An ultra-high temperature seedling mode is adopted; germination accelerating is performed at 35-38 DEG C; the air temperature in a position of one meter from the ground after emergence can reach 45-48 DEG C and the humidity is kept at 90-100%; potato seedlings stay at the high temperature for a long time, and plant diseases and insect pests do not occur; in addition, stems and leaves are protected from damage by virtue of high humidity; the accumulated temperature is relatively high in the high temperature andhigh humidity environment, the whole temperature of the greenhouse rises, and the potato seedlings are more robust and the emergence rate is high; and after the cultured sweet potato seedlings are planted in field, the yield is increased by 5-10% compared with that of common seedlings; in addition, the produced sweet potato is good in shape, free of diseases and can be stored more easily; the emergence rate is improved by 33.3-77.8% based on 120-160 pieces of seedlings (calculated by a 60-day seedling harvesting period) of each kilograms of sweet potato compared with that of the sweet potatoobtained by conventional technology; and the method is of great significance in producing high-quality healthy seedlings, promoting the sweet potato industry development and improving the economic benefit.

Description

technical field [0001] The invention relates to a method for raising sweet potato seedlings in ultra-high temperature greenhouses, belonging to the technical field of seedling raising. Background technique [0002] Sweet potato belongs to Convolvulaceae sweet potato, the ground is winding stems, and the top branch of the underground tuber is expanded into an ovoid tuber with light yellow and smooth skin. Sweet potatoes were originally grown in tropical regions such as the Philippines. The tropical region is in a high-temperature and high-humidity environment. After being introduced into my country, especially in the northern regions, the high temperature and high humidity cannot be achieved, and high temperature and high humidity conditions must be created. [0003] Sweet potato seedling raising is an important part of planting sweet potato, and conventional seedling raising techniques are mostly used at present. The germination temperature generally does not exceed 35°C, a...

AI Technical Summary

Problems solved by technology

The germination temperature generally does not exceed 35°C, and the air temperature for seedling cultivation after emergence generally requires 25-28°C and humidity of 70-80%. In this environment, many diseases and insect pests are easy to breed, resulting in an increase in potato seedling diseases

Moreover, due to the low temperature and humidity, the growth of potato seedlings is slow and the emergence rate is low.

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