Fertilizer additive for reducing nitrate in outdoor vegetables and leaching loss of soil nitrate nitrogen

A fertilizer additive and nitrate nitrogen technology, which is applied in the direction of alkaline orthophosphate fertilizer, ammonium orthophosphate fertilizer, nitrogen fertilizer, etc., to achieve the effects of low cost, cost saving, and reduction of plant nitrate content

Inactive Publication Date: 2018-03-16
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the measures to reduce nitrate content are improving cultivation conditions, balanced fertilization, breeding of low-accumulation varieties, application of additives, etc., but the above-mentioned measures have certain limitations

Method used

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  • Fertilizer additive for reducing nitrate in outdoor vegetables and leaching loss of soil nitrate nitrogen
  • Fertilizer additive for reducing nitrate in outdoor vegetables and leaching loss of soil nitrate nitrogen
  • Fertilizer additive for reducing nitrate in outdoor vegetables and leaching loss of soil nitrate nitrogen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Effect of Adding DMPP on Vegetable Field Soil Nitrate Nitrogen Wetting

[0018] 1. Experimental design

[0019] The test was carried out in the Plant Nutrition Experimental Research Base of Huazhong Agricultural University in Wuhan City, Hubei Province (114°12′49″E, 30°17′2″N), using 16 large undisturbed soil columns (diameter 610mm, height 700mm, surface area 0.29 ㎡), the construction of the undisturbed soil column refers to Zhao Changsheng (2009), the soil used for the test comes from the vegetable field in the suburbs of Wuhan, and the basic physical and chemical properties of the soil are shown in Table 1:

[0020] Table 1. Basic physical and chemical properties of vegetable soil

[0021]

[0022] Inorganic fertilizers (CF) for testing include nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer, respectively with urea (46% N), potassium dihydrogen phosphate (52% P 2 o 5 ) and potassium sulfate (50% K 2 O) is the fertilizer source. The test or...

Embodiment 2

[0042] Effect of Adding Chitin on Yield and Quality of Vegetables

[0043] 1. Experimental design

[0044] 1.1. Field test

[0045] The test site is the outskirts of Dagang Village, Jiangxia District, Wuhan City, and the basic physical and chemical properties of the soil are shown in Table 5:

[0046] Table 5 Basic physical and chemical properties of soil

[0047]

[0048] Inorganic fertilizers for testing include nitrogenous fertilizers, phosphorus fertilizers and potash fertilizers, respectively with nitrogen, phosphorus and potassium (15-15-15) Stanley compound fertilizer, urea (46%) and Sinochem potassium chloride (K 2 O≥60%) is the fertilizer source. The organic fertilizer (OM) for testing is organic fertilizer potassium fulvic acid (nutrient content is 70.71% of organic matter, 0.66% of total nitrogen, 0.02% of total phosphorus, and 0.08% of total potassium). All fertilizers were applied as base fertilizer at one time before sowing, and there was no topdressing in t...

Embodiment 3

[0075] Effects of Adding Chitin and DMPP on Vegetable Yield and Quality

[0076] 1. Experimental design

[0077] 1.1. Field test

[0078] The test site is the outskirts of Dagang Village, Jiangxia District, Wuhan City, and the basic physical and chemical properties of the soil are shown in Table 11:

[0079] Table 11 Basic physical and chemical properties of soil

[0080]

[0081]

[0082] Inorganic fertilizers for testing include nitrogenous fertilizers, phosphorus fertilizers and potash fertilizers, respectively with nitrogen, phosphorus and potassium (15-15-15) Stanley compound fertilizer, urea (46%) and Sinochem potassium chloride (K 2 O≥60%) is the fertilizer source. The organic fertilizer (OM) for testing is organic fertilizer potassium fulvic acid (nutrient content is 70.71% of organic matter, 0.66% of total nitrogen, 0.02% of total phosphorus, and 0.08% of total potassium). All fertilizers were applied as base fertilizer at one time before sowing, and there w...

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Abstract

The invention provides a fertilizer additive for reducing nitrate in outdoor vegetables and leaching loss of soil nitrate nitrogen. The fertilizer additive comprises 3, 4-dimethylpyrazole phosphate and chitin; a fertilizer is an inorganic fertilizer or a mixture of the inorganic fertilizer and an organic fertilizer; the addition amount of the 3, 4-dimethylpyrazole phosphate is 1% of N in the inorganic fertilizer; the addition amount of the chitin is 0.30%-0.62% of N in the inorganic fertilizer; chitosan is taken as the basis. According to the fertilizer additive, the content of the nitrate inthe outdoor vegetables and the leaching loss of the soil nitrate nitrogen can be effectively reduced, the quality of the vegetables is improved, and the environment stress is relieved.

Description

technical field [0001] The invention relates to the technical field of vegetable fertilization, in particular to a fertilizer additive for reducing the leaching loss of vegetable nitrate and soil nitrate nitrogen in open field. Background technique [0002] As an indispensable plant food in daily life, vegetables provide the human body with a variety of amino acids, vitamins and other rich nutrients, and are also the main source of nitrate absorbed by the human body. The content of nitrate in vegetables has always attracted people's attention, and its level is an important indicator to measure the quality of vegetables. Vegetables are nitrate-loving crops. The use of chemical nitrogen fertilizers not only provides essential nutrients for the growth of vegetable crops, but also determines the time to market, yield, and quality of vegetables. Vegetable farmers abuse chemical fertilizers in pursuit of profit, leading to a series of food safety and environmental pollution probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
CPCC05B7/00C05B15/00C05G3/00C05G3/80C05C9/00C05D1/02C05F1/007C05F11/02C05G1/00
Inventor 谭启玲孙学成胡承孝赵小虎李晓兰何苇竹兰翔潘振鹏
Owner HUAZHONG AGRI UNIV
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