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Nursery substrate and preparation method and application thereof

A technology for raising seedling substrate and mass ratio, which is applied in the agricultural field and can solve the problems of tobacco yield reduction or failure, affecting tobacco quality and the like

Active Publication Date: 2020-10-13
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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  • Nursery substrate and preparation method and application thereof
  • Nursery substrate and preparation method and application thereof
  • Nursery substrate and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The preparation of embodiment 1 tobacco seedling raising substrate

[0055] Tobacco seedling growth matrix is ​​prepared according to the following method:

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

[0057] Preparation of earthworm excrement: crush corn stalks and corn cobs and carry out decomposing fermentation, use decomposed fermentation products to breed earthworms, spray water according to the ratio of decomposed products (air-dry weight): water (weight ratio) = 4:1, and then add 5kg (fresh Heavy) earthworms, w...

Embodiment 2

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

[0065] In the present embodiment, after the tobacco seedling raising substrate is mixed according to the ratio described in Example 1, the nutrient solution (N, P 2 o 5 , K 2 O, Fe, B, Cu, Zn, Mo, Mn, S and Mg concentrations are 30mg / L, 15mg / L, 30mg / L, 0.10mg / L, 0.05mg / L, 0.02mg / L, 0.02mg / L, 0.01mg / L, 0.05mg / L, 0.05mg / L, 0.05mg / L), stir well and set aside. Tobacco seedlings were cultivated with a standard 50-hole tray (53cm×27cm), and 16g of the above-mentioned tobacco seedling-raising substrate was loaded into each hole. The Yunyan 87 tobacco seeds after germination were sown in hole trays equipped with different substrates, and the seedlings were thinned after emergence, leaving one tobacco seedling in each hole. Each treatment replicated 15 seedling holes. Placed in an incubator (14h light per day, light intensity 200μmol m -2 the s -1 , temperature 25±1°C; 10h dark, temperat...

Embodiment 3

[0070] Embodiment 3 Different substrates reduce the effect of Cd in polluted soil and tobacco

[0071] (1) Nurturing:

[0072] In the present embodiment, after the tobacco seedling raising substrate is mixed according to the ratio described in Example 1, the nutrient solution (N, P 2 o 5 , K 2 O, Fe, B, Cu, Zn, Mo, Mn, S and Mg concentrations are 30mg / L, 15mg / L, 30mg / L, 0.10mg / L, 0.05mg / L, 0.02mg / L, 0.02mg / L, 0.01mg / L, 0.05mg / L, 0.05mg / L, 0.05mg / L), stir well and set aside. Tobacco seedlings were cultivated with a standard 50-hole tray (53cm×27cm), and 16g of the above-mentioned tobacco seedling-raising substrate was loaded into each hole. The Yunyan 87 tobacco seeds after germination were sown in 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-polluted surface soil (0-20 cm) from two different tobacco planting a...

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Abstract

The invention discloses a nursery substrate. The nursery substrate comprises the following raw materials: bone charcoal powder, wormcast, mica, potassium feldspar and an alkaline phosphatase producingmicrobial agent. The invention further discloses a preparation method of the nursery substrate, and the preparation method comprises the step of mixing the bone charcoal powder, the wormcast, the mica, the potassium feldspar and the alkaline phosphatase producing microbial agent to obtain the nursery substrate. The nursery substrate can effectively reduce the content of heavy metals in soil, improve the growth performance of plants, reduce oxidative damage to the plants and reduce the content of heavy metals in plant bodies.

Description

technical field [0001] The invention belongs to the field of agriculture, and relates to a seedling-raising substrate for improving tobacco leaf seedling strength and reducing tobacco leaf heavy metal damage 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 raising 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 substrate mainly uses 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 cultivation and realize ...

Claims

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Application Information

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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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