Compound fertilizer special for pakchoi, preparation method and application thereof

A technology of compound fertilizer and pakchoi, which is applied in the directions of application, fertilizer mixture, fertilization device, etc., can solve the problems of poor control effect of pakchoi clubroot, reduce the quality of cultivated land, increase salinization, etc., so as to inhibit reproduction. and growth, to achieve safe growth, the effect of inhibiting growth

Inactive Publication Date: 2019-05-07
ZHEJIANG FORESTRY UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the by-product calcium peroxide can form precipitation with heavy metals in the soil and reduce its activity in the soil; however, long-term addition of calcium hydroxide will cause soil compaction, increase salinization, and reduce the quality of cultivated land, etc., and the invention Ineffective control of cabbage clubroot
For this reason, under the condition of considering the security of long-term remediation of heavy metal-contaminated soil and the control of crop disease (clubroot), this method has defects.

Method used

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  • Compound fertilizer special for pakchoi, preparation method and application thereof
  • Compound fertilizer special for pakchoi, preparation method and application thereof
  • Compound fertilizer special for pakchoi, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Test location:

[0035]The intelligent greenhouse of Zhejiang Agriculture and Forestry University (30°19′N, 119°35′E), Lin’an City, Zhejiang Province, is located in the southern edge of the subtropical monsoon climate zone, which belongs to the monsoon climate. The annual rainfall is 1628.6 mm and the annual average temperature is 16.4 ℃, the annual sunshine hours are 1847.3 hours.

[0036] 2. Test material:

[0037] (1) Improved peanut shell charcoal:

[0038] Take discarded peanut shells in the current season, put them in a muffle furnace, pyrolyze them at 500°C for 2 hours, and cool naturally to obtain peanut shell charcoal; the ratio of adding peanut shell charcoal to the LB liquid medium for cultivating Bacillus subtilis 10:100(m 炭 / v 培养基 ); after culturing Bacillus subtilis for 24 hours, the peanut shell charcoal was taken out and air-dried naturally to obtain improved peanut shell charcoal.

[0039] (2) Improved corn straw charcoal:

[0040] Take the dis...

Embodiment 2

[0070] The implementation conditions, site, and cultivation conditions of the present embodiment are all the same as in Example 1, and the soil sample that adopts soil culture is 2kg. 5 treatments are set, and the fertilizer components used in each treatment are different, but the fertilizer preparation method is the same as in Example 1, and each application rate is the same (taking the soil quality as a benchmark, and the mass percentage is 2.5%); specifically as follows:

[0071] (1) CK: control, no fertilizer added;

[0072] (2) Organic fertilizer + inorganic fertilizer: only add organic fertilizer and inorganic fertilizer, the mass ratio is 70:10;

[0073] (3) Peanut shell charcoal + organic fertilizer + inorganic fertilizer: add unimproved peanut shell charcoal, organic fertilizer and inorganic fertilizer, the mass ratio is 20:70:10;

[0074] (4) Corn stalk charcoal + organic fertilizer + inorganic fertilizer: add unimproved corn stalk charcoal, organic fertilizer and i...

Embodiment 3

[0095] The implementation conditions, site, cultivation conditions, measurement index etc. of the present embodiment are all identical with embodiment 2 (comprising the ratio between each component, application rate etc.), and its only difference is in the processing setting of the present embodiment, specifically as follows :

[0096] (1) CK: control, no fertilizer added;

[0097] (2) Improved peanut shell charcoal + organic fertilizer + inorganic fertilizer: add improved peanut shell charcoal, organic fertilizer and inorganic fertilizer, the mass ratio is 20:70:10;

[0098] (3) Improved corn stalk charcoal + organic fertilizer + inorganic fertilizer: add improved corn stalk charcoal, organic fertilizer and inorganic fertilizer with a mass ratio of 20:70:10;

[0099] (4) Improved pine charcoal + organic fertilizer + inorganic fertilizer: add improved pine charcoal, organic fertilizer and inorganic fertilizer, the mass ratio is 20:70:10;

[0100] (5) Improved sawdust charcoa...

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Abstract

The invention discloses a compound fertilizer special for pakchoi and application thereof. The compound fertilizer includes an organic fertilizer, an inorganic fertilizer and improved biochar in a weight ratio of 65-75:8-12:15-23, and the pH value of the compound fertilizer is 6-9, wherein the improved biochar is mainly prepared by: standing 2 parts of peanut shell charcoal and 1 part of corn straw charcoal in an LB medium of bacillus subtilis for 24-48h. The application amount of the compound fertilizer is 50-100kg/mu. The invention adopts a special compound fertilizer of appropriate dosage proportion directed at cadmium polluted pakchoi cultivated land having plasmodiophora brassicae. The compound fertilizer is not added with improved biochar, but also is introduced with bacillus subtilis having bacteriostatic effect, and is added with the organic fertilizer and inorganic fertilizer obtained by thorough decomposition of livestock and poultry excrement. Therefore, the special fertilizer not only can effectively reduce the accumulation of heavy metal cadmium in pakchoi, improve the in-situ remediation efficiency of heavy metal contaminated soil, promote the growth of pakchoi, but also can inhibit the growth ofplasmodiophora brassicae woron, and achieves the technical effect of inhibiting the plasmodiophora brassicae of pakchoi.

Description

technical field [0001] The invention relates to the technical field of soil pollution restoration and crop disease prevention and control, in particular to a special compound fertilizer for pakchoi and its preparation method and application. Background technique [0002] Chinese cabbage belongs to cruciferous vegetables, also known as green vegetables, feather vegetables, etc. It is native to China and is the most abundant vegetable in minerals and vitamins. It is known as the "king of vegetables". Chinese cabbage is also a popular vegetable with a large cultivation area and consumption. According to incomplete statistics of relevant literature, there are 320 seriously polluted areas in 24 provinces and cities nationwide, and heavy metal pollution accounts for more than 80% of polluted agricultural products. According to statistics, pakchoi is a vegetable with high absorption and high accumulation of heavy metals in the soil in heavily polluted areas, and the proportion of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
Inventor 柳丹徐炜杰杨梢娜马嘉伟杨佳恒王瑛王欣叶正钱贾军伟廖诗彦骆文轩侯淑贞
Owner ZHEJIANG FORESTRY UNIVERSITY
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