A kind of soilless green seedling raising method of rhubarb

Abstract

The invention relates to a soilless green seedling raising method of rhubarb, which comprises the following steps: making a seedbed, sowing and raising seedlings, managing at the seedling stage, digging and transplanting seedlings, wherein the mixed substrate used in the seedbed is 2 mm of vermiculite and 4 mm of desulfurized cinder and astragalus waste granules, the preparation method of the astragalus waste granules is as follows: after the astragalus seedlings are harvested, the discarded leaves and stems of the astragalus seedlings are collected, dried continuously at about 60 degrees Celsius, and directly crushed after drying Sieve to keep the particles of about 2 mm for later use. The present invention effectively reduces the dead seedling rate of rhubarb soilless seedlings, is suitable for the growth of rhubarb seedlings, increases the growth period and has a high survival rate after transplanting and has high yield: adopting the technical scheme of the present invention to carry out rhubarb soilless seedling cultivation, the yield of robust rhubarb seedlings is obvious Because it is higher than other existing rhubarb seedling raising methods commonly used, the production efficiency is greatly improved, the cost is reduced, and strong support is provided for the large-scale development of the rhubarb industry.

Description

technical field [0001] The invention relates to the technical field of agricultural economic crop breeding, in particular to a soilless green seedling raising method of rhubarb. Background technique [0002] Rhubarb is a plant of the genus Rhubarb in the family Polygonaceae, mainly distributed in Shaanxi, southeastern Gansu, Qinghai, western Sichuan, northwestern Yunnan and eastern Tibet. The traditional Chinese medicine rhubarb has the effects of attacking stagnation, clearing damp-heat, purging fire, cooling blood, removing blood stasis, and detoxifying. [0003] With the development of society, the demand for rhubarb in the market continues to increase, and the price continues to soar. Therefore, the requirements for the quality and output of rhubarb seedlings are also increasing. However, there are many problems in the traditional method of raising seedlings with soil as rhubarb seedling substrate: 1) rhubarb seedlings have a high occupation rate of soil; 2) rhubarb see...

AI Technical Summary

Problems solved by technology

However, there are many problems in the traditional method of raising seedlings with soil as rhubarb seedling substrate: 1) rhubarb seedlings have a high occupation rate of soil; 2) rhubarb seedlings have deep roots, which are difficult to dig and easily cause root damage , reduced the survival rate after transplanting; 3) the pollution of soil by pesticides and heavy metals affected the yield and quality of seedlings

At present, the root length of rhubarb seedlings raised in traditional soil is 16-19cm, the root diameter is 1.0-1.6cm, and the incidence rate is at least 10-20%. If soilless seedlings can be used to solve the disadvantages of traditional soil seedlings, you can further explore rhubarb Seedling growth potential, so it is the general trend to produce rhubarb seedlings by soilless seedling cultivation, but it is found in practice that simple application of existing soilless seedling cultivation methods cannot obtain robust rhubarb seedlings, the reason is that soilless seedling cultivation All the nutrients needed for seedling growth come from the nutrient solution, but the research and development of the nutrient solution for authentic Chinese herbal medicine is not perfect, and the nutrients required by various Chinese herbal medicines are not the same, and some key elements cannot be provided by the existing nutrient solution. Without these key elements, the seedlings of Chinese herbal medicines will not grow well. The core point is what kind of substances or combinations of substances these key elements are. At present, there are not many research results. Therefore, simply using soilless seedling cultivation technology will not be successful. To obtain robust rhubarb seedlings more efficiently, it is necessary to adopt a new type of rhubarb seedling raising technology to solve the above problems in an all-round way