Method for raising seedlings out of sweet potato true seeds through nutritive bags

Abstract

The invention relates to a method for raising seedlings out of sweet potato true seeds through nutritive bags and belongs to the technical field of seedling raising of the sweet potato true seeds.The method comprises the specific steps of 1, selecting the position of a seed bed; 2, placing the seeds into the nutritive bags, and densely arranging the nutritive bags; 3, selecting sprouting sweet potato true seeds subjected to pretreatment, hand-sowing the sprouting sweet potato true seeds into the nutritive bags, watering the sprouting sweet potato true seeds thoroughly, and covering the sprouting sweet potato true seeds with a thin film; 4, after the seedlings grow fully, removing the film at nightfall or on a cloudy day; 5, on the third to fifth day after the seedlings grow fully, applying a seedling raising fertilizer for the first time, wherein the nitrogen concentration is 300 mg / L, and applying the fertilizer another time seven days later; 6, on the 30 to 40 day after the seeds are sowed, in other words, the strong seedling standard is reached, conducting transplanting with soil.By means of the method for raising the seedlings out of the sweet potato true seeds through the nutritive bags, the germination rate reaches 92% or above, the emergence rate reaches 100%, the seedlings can grow fully in five days, the seedlings grow consistently, the root system is robust, quality of the raised seedlings is high, the adaptive capacity to an acquired environment is great, operation is simple, seedling raising time is flexible, at the later stage, it can be selected to culture the seedlings at site till the seedlings get mature, harvesting is conducted and furthermore the variety is subjected to breeding according to the conditions, the harvest yield of excellent strains is increased, and time for excellent variety breeding is shorted.

Description

Technical field [0001] The invention belongs to the technical field of sweet potato seedling raising by seedlings, and specifically relates to a method for raising seedlings of sweet potato seedlings in a nutrient bag. Background technique [0002] Sweet potato (Ipomoeabatatas Lam.), also known as sweet potato, sweet potato, sweet potato, sweet potato, etc., is a dicotyledonous plant, a vine herb of the Convolvulaceae (Convolvulaceae) sweet potato genus (Ipornoea), an annual or perennial plant that prefers mild and short-day sunlight. With the advantages of high yield, wide range of applications and strong adaptability, it is an important grain, feed, energy and processed crop in China after rice, wheat and corn. [0003] Sweet potatoes can bloom and bear fruit in tropical areas, but they usually cannot bear fruit in temperate regions. For example, in the central and northern regions of my country, most sweet potato varieties cannot bloom under natural conditions. Even in the sout...

AI Technical Summary

Problems solved by technology

[0005] At present, the common method of growing sweet potato seed seedlings is: set up a seedbed with peat soil, vermiculite powder or seedling substrate in the greenhouse or in the open air, and sow seeds on the seedbed, pour appropriate amount of water, and then build a small shed on the seedbed. This method is more labor-intensive, time-consuming, and the seedling growth is uneven, the seedling is weak, and the survival rate of transplanting is not high, and there is no report about the nutrition bag seedling cultivation technology of the sweet potato seed

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