A kind of nursery substrate and its preparation method and use

A seedling raising substrate and quality ratio technology, applied in the agricultural field, can solve the problems of tobacco production reduction or failure, affecting tobacco quality, etc.

Active Publication Date: 2022-07-12
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the concentration of Cd pollution in the soil in the smoking area is too high, on the one hand, it can not only cause tobacco yield reduction or crop failure to varying degrees, but on the other hand, it will affect the macronutrient elements (such as K, Ca, Mg, Si, Fe, etc.) and trace elements of tobacco. The absorption of (such as Zn, Se, etc.) is also affected, thereby affecting the quality of tobacco

Method used

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  • A kind of nursery substrate and its preparation method and use
  • A kind of nursery substrate and its preparation method and use
  • A kind of nursery substrate and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Example 1 Preparation of Tobacco Seedling Substrate

[0055] Tobacco seedling substrates were prepared as follows:

[0056] Preparation of bone char powder: The bone char powder was purchased from Zhejiang Jimei Biotechnology Co., Ltd., the calcination temperature of the bone char powder was 500-550 °C, and the bone char powder with an average geometric particle size of 30 μm was obtained after mechanical pulverization and treatment with a ball mill. For the specific surface area distribution of the tested bone char powder, see figure 1 . The particle size distribution of the tested bone char powder is shown in figure 2 .

[0057] Preparation of earthworm excrement: the corn stalk and corn cob are crushed and then decomposed and fermented, and earthworms are cultivated with decomposed fermentation products. Heavy) earthworms. During the breeding period, water was regularly added to maintain sufficient water. After about 50 days of breeding, the earthworms were manu...

Embodiment 2

[0064] The effect of embodiment 2 different substrates on tobacco seedling raising

[0065] In this example, after the tobacco seedling substrate is mixed in the proportion described in Example 1, a nutrient solution (N,P) with a maximum field capacity of 72% is added. 2 O 5 ,K 2 The concentrations of O, Fe, B, Cu, Zn, Mo, Mn, S and Mg were 30mg / L, 15mg / L, 30mg / L, 0.10mg / L, 0.05mg / L, 0.02mg / L, 0.02mg, respectively / L, 0.01mg / L, 0.05mg / L, 0.05mg / L, 0.05mg / L), stir well and set aside. Tobacco seedlings were cultivated in standard 50-hole plug trays (53cm×27cm), and 16g of the above tobacco seedling-raising substrates were loaded into each hole. The germinated Yunyan 87 tobacco seeds were sown into hole trays equipped with different substrates, and the seedlings were thinned after emergence, leaving one tobacco seedling in each hole. Each treatment was replicated with 15 nursery holes. Placed in an incubator (14h light per day, light intensity 200μmol m -2 s -1 , temperatu...

Embodiment 3

[0070] Example 3 Effects of different substrates on reducing Cd in contaminated soil and tobacco

[0071] (1) Nursing seedlings:

[0072] In this example, after the tobacco seedling substrate is mixed in the proportion described in Example 1, a nutrient solution (N,P) with a maximum field capacity of 72% is added. 2 O 5 ,K 2 The concentrations of O, Fe, B, Cu, Zn, Mo, Mn, S and Mg were 30mg / L, 15mg / L, 30mg / L, 0.10mg / L, 0.05mg / L, 0.02mg / L, 0.02mg, respectively / L, 0.01mg / L, 0.05mg / L, 0.05mg / L, 0.05mg / L), stir well and set aside. Tobacco seedlings were cultivated in standard 50-hole plug trays (53cm×27cm), and 16g of the above tobacco seedling-raising substrates were loaded into each hole. The germinated Yunyan 87 tobacco seeds were sown into hole trays equipped with different substrates, and the seedlings were thinned after emergence, leaving one tobacco seedling in each hole.

[0073] (2) Transplantation and testing

[0074] In this example, Cd-contaminated surface soil ...

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Abstract

The invention discloses a seedling-raising substrate. The raw materials of the seedling-raising substrate include bone charcoal powder, earthworm excrement, mica, potassium feldspar and alkaline phosphatase-producing bacterial agent. The invention also discloses a preparation method of a seedling substrate. The preparation method includes: mixing bone charcoal powder, earthworm excrement, mica, potassium feldspar and alkaline phosphatase producing bacterial agent to obtain a seedling substrate. The seedling substrate of the invention can effectively reduce the heavy metal content in soil, improve plant growth performance, reduce plant oxidative damage and reduce plant heavy metal content.

Description

technical field [0001] The invention belongs to the field of agriculture and relates to a seedling-raising substrate for improving tobacco seedling strength and reducing the harm of heavy metals in tobacco leaves and a preparation method thereof, in particular to a seedling strengthening agent for reducing the absorption and accumulation of cadmium in tobacco leaves and its preparation and use methods. Background technique [0002] Seedling is an important link in the process of tobacco planting. The quality of seedlings directly affects the growth, development, yield and quality of tobacco. The quality of seedlings is not only closely related to the nutritional status of the substrate, but also affected by the microbial activity in the substrate. The current tobacco seedling substrates mainly use peat as the main raw material. However, peat is a non-renewable resource with limited resources and high price. In order to reduce the cost of seedling raising and realize the sus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G24/10A01G24/20A01G24/15A01G24/12C05G3/80C09K17/40C09K101/00C09K109/00
CPCA01G24/10A01G24/20A01G24/15A01G24/12C05G3/80C05B17/00C09K17/40C09K2101/00C09K2109/00C05D1/00C05D1/04C05D5/00C05D9/00C05D9/02C05F3/00C05F11/08Y02A40/20
Inventor 王萌陈世宝段淑辉曾维爱谢鹏飞杨佳蒴
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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