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Pakchoi fertilizing method capable of reducing nitrate content

A technology of nitrate content and fertilization method is applied in the fertilization field of reducing the nitrate content of pakchoi, and can solve the problems of imbalanced nutrient ratio, acidification of vegetable garden soil, reduction of vegetable yield and quality, etc., and achieves insignificant difference, improved yield and solubility. The effect of increasing sugar content and vitamin C content

Inactive Publication Date: 2007-11-07
GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to increase the yield of vegetables, chemical fertilizers, especially nitrogen fertilizers, are blindly applied indiscriminately in vegetable production, and the imbalance of nutrient ratios is more serious, resulting in acidification of vegetable garden soil, reduction of vegetable yield and quality, accumulation of nitrate, and a series of ecological and environmental problems. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Will contain organic matter 39.87%, N 2.445% (4.9kg / mu), P 1.262% (2.5kg / mu), K 1.83% (3.7kg / mu), Ca 2.3% (4.6kg / mu), Mg 0.56% ( 1.1kg / mu), B 26.77mg / kg (5.4g / mu), Mo 1.27mg / kg (0.25g / mu) decomposed chicken manure 200kg and Mo 54% (27g / mu) ammonium molybdate (NH 4 ) 6 Mo 7 o 24 4H 2 O 50g is used as the base fertilizer of 1 mu, and is buried in the planting ditch before the pakchoi seedlings are transplanted.

[0017] Contain N 18% (9kg / mu), contain P 3.5% (1.8kg / mu) and contain K 9.96% (5kg / mu) Vegetable-specific compound fertilizer 50Kg is divided into 4 parts equally as the topdressing of 1 mu, gradation Drench with boiling water, drench for the first time after the vegetable seedlings survive, and then once a week for a total of four times.

Embodiment 2

[0019] Will contain organic matter 23.74%, N 1.956% (3.9kg / mu), P 1.558% (3.1kg / mu), K 2.024% (4.0kg / mu), Ca 3.3% (6.6kg / mu), Mg 0.612% ( 1.2kg / mu), B 27.76mg / kg (5.6g / mu), Mo 1.10mg / kg (0.22g / mu) decomposed pigeon manure 200kg as base fertilizer, buried in the planting ditch before the cabbage seedling transplantation.

[0020] Contain the urea 17.4kg of N 46% (8.0kg / mu), contain the superphosphate 19.0kg of P 5.24% (1.0kg / mu), contain the potassium chloride 13.3Kg of K 49.8% (6.6kg / mu), Ammonium molybdate (NH 4 ) 6 Mo 7 o 24 4H 2 Each of O 67g is divided into 4 parts, mixed as topdressing, gradated boiling water drenching, drenching the first time after the vegetable seedlings survived, drenching once a week thereafter, and drenching four times in total.

Embodiment 3

[0022] Will contain organic matter 39.87%, N 2.445% (12.2kg / mu), P 1.262% (6.3kg / mu), K 1.830% (9.2kg / mu), Ca 2.3% (11.5kg / mu), Mg 0.560% ( 2.8kg / mu), B 26.77mg / kg (13.4g / mu), Mo 1.27mg / kg (0.6g / mu) decomposed chicken manure 500kg and Mo 54% (15g / mu) ammonium molybdate (NH 4 ) 6 Mo 7 o 24 4H 2 O 27.8g is used as the base fertilizer of 1 mu, and it is buried in the planting ditch before the pakchoi seedlings are transplanted.

[0023] With urea 10.8kg containing N 46% (5.0kg / mu), calcium superphosphate 17.2kg containing P 5.24% (0.9kg / mu), potassium chloride 6.63Kg containing K 49.8% (3.3kg / mu) Divide it into 4 parts, mix it as topdressing, and pour it with boiled water in stages, the first time after the vegetable seedlings survive, and then once a week, for a total of four times.

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Abstract

The pakchoi fertilizing method capable of reducing nitrate content in pakchoi includes the following steps: applying base fertilizer of organic fertilizer before transplantation of pakchoi seedling to provide N in 3-12.2 kg, P 1.6-6.3 kg, K 2.3-9.2 kg, Ca 2.9-11.5 kg, Mg 0.7-2.8 kg, B 3.3-13.4 g and Mo 0.16-0.64 g each mou; applying inorganic fertilizer as top dressing for four time to provide N in 5-15 kg, P 0.9-2.4 kg, K 3.3-9.6 kg each mou; and adding Mo containing inorganic fertilizer to the base fertilizer or top dressing. The said method can reduce the nitrate content in pakchoi by 34-60 % while increasing yield of pakchoi, and the soluble sugar and vitamin C contents of pakchoi.

Description

technical field [0001] The invention relates to a cultivation method of pakchoi, in particular to a fertilization method for reducing the nitrate content of pakchoi. Background technique [0002] Vegetables are rich in vitamins, minerals, carbohydrates, proteins, cellulose, etc., and are important plant foods in people's lives. It is the nutritional characteristic of vegetable crops to like fertilizer and need a large amount of fertilizer. In recent years, with the adjustment of agricultural production structure, vegetable production in Guangdong has developed rapidly. At present, vegetable planting area, total output, and total output value rank second only to grain in the planting industry of coastal provinces, and become the main rural economy. One of the pillars is the largest export agricultural product after aquatic products. However, in order to increase the yield of vegetables, chemical fertilizers, especially nitrogen fertilizers, are applied blindly and indiscrim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01C21/00C05G1/00
Inventor 李淑仪廖新荣蓝佩玲王荣萍
Owner GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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