Liquid fertilizer for drip irrigation for saline and alkaline inland, and preparation method of liquid fertilizer

A technology of liquid fertilizer and saline-alkali land, applied in the direction of alkaline orthophosphate fertilizer, organic fertilizer, fertilizer mixture, etc., can solve the problems of high substitutable sodium ion content, high soil salinity content, low soil nutrient activity, etc., and achieve improvement Effectiveness, enhanced bioactivity, simple application effect

Active Publication Date: 2015-04-22
INST OF AGRI ENVIRONMENT & RESOURCE SHANXI ACAD OF AGRI SCI
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of shortage of water resources in inland saline-alkali land, high soil salinity content, strong alkalinity, high content of substitutable sodium ions, poor soil physical propert

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The weathered coal after removing impurities and air-drying is pulverized and passed through a sieve of 80-100 meshes.

[0036] Take the Penicillium strain preserved in liquid paraffin and inoculate it on the PDA slant medium by streaking, culture at 26-32°C for 60-72 hours, and transfer the tube twice continuously to activate the strain. Inoculate the activated strain into a 250mL conical flask containing 100mL potato glucose culture solution, rotate the conical flask at 140-180r / min at 26-32°C, shake the seed liquid and culture it, and cultivate it at constant temperature for 24-48h as the seed liquid.

[0037] Insert the activated strain into the weathered coal at a ratio of 3-10%, and then add glucose inorganic salt nutrient solution accounting for 35-40wt% of the weathered coal mass to make the water content 20-40%. , static culture for 10 to 15 days, during which water is replenished intermittently to obtain weathered coal microbial fermentation products with a w...

Embodiment 2

[0054] The preparation method of liquid fertilizer for drip irrigation in saline-alkali land is the same as in Example 1, and the amount of various raw materials is: 350kg of fulvic acid extracted by microbial fermentation, 200kg of urea, 50kg of ammonium polyphosphate, 100kg of potassium dihydrogen phosphate, 20kg of sodium pyrophosphate, ferrous sulfate 25kg, zinc sulfate 25kg, manganese sulfate 25kg, 20% а-naphthalene acetic acid 95% ethanol solution 5kg.

[0055] Wherein, in the preparation of the fulvic acid extracted by the microbial fermentation, the bacterial species used is Aspergillus niger instead of Penicillium strain.

[0056] Using the liquid fertilizer for drip irrigation in inland saline-alkali land prepared in this example, a field test of drip irrigation under a corn film was carried out on a typical moderate soda saline soil in Huairen County, Shuozhou City, Shanxi Province.

[0057] Test location: Maozao Village, Maozao Town, Huairen County, Shuozhou City, ...

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PUM

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Abstract

The invention discloses a liquid fertilizer for drip irrigation for a saline and alkaline inland. The liquid fertilizer comprises the following components: 20 to 40 parts of fulvic acid extracted by microbial fermentation, 20 to 30 parts of urea, 5 to 10 parts of ammonium polyphosphate, 10 to 20 parts of potassium dihydrogen phosphate, 2 to 5 parts of an inorganic additive, 2 to 3 parts of ferrous sulfate, 2 to 3 parts of zinc sulfate, 2 to 3 parts of manganese sulfate, and 0.5 to 1 part of 15 to 20wt% plant growth regulator ethanol solution. The pH value of the fertilizer is 3.5 to 4.0. The liquid fertilizer for drip irrigation provided by the invention has the advantages of effectively reducing the pH value of crop rhizosphere soil, improving the bioavailability of soil nutrients, achieving the balanced supply of water and nutrients, and improving the water and fertilizer use efficiency.

Description

technical field [0001] The invention relates to a liquid fertilizer, in particular to a liquid fertilizer suitable for use in inland saline-alkali areas. Background technique [0002] Soil salinization is a worldwide problem. There are 950 million hectares of saline-alkali land in the world. my country has 99.13 million hectares of saline-alkali land and 6 million hectares of saline-alkali cultivated land. Among the widely distributed saline-alkali lands, inland saline-alkali lands have the largest area, including the northwest, northeast and the middle and upper reaches of the Yellow River, accounting for about 69% of all saline-alkali lands. Improving saline-alkali land is of great significance to ensuring food security and ecological security. [0003] Inland saline-alkali soil has the characteristics of strong alkalinity, high content of substitutable sodium ions, and poor soil physical properties. High pH value will reduce the bioavailability of phosphorus and some tra...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04C05G3/80
CPCC05B7/00C05G3/00C05G3/80C05B17/00C05C9/00C05D9/02C05F11/02
Inventor 张强陈明昌张一弓闫敏李磊王斌冯悦晨聂督黄高鉴孙捷温东
Owner INST OF AGRI ENVIRONMENT & RESOURCE SHANXI ACAD OF AGRI SCI
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