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Paddy field fertilizing method based on biogas slurry water fertilizer

A fertilization method and paddy field technology, applied in the field of resource utilization of agricultural waste, to achieve the effect of long duration of fertilizer effect and high yield

Inactive Publication Date: 2015-06-10
ZHEJIANG FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there are few patents related to the use of biogas slurry to irrigate rice fields, replace chemical fertilizers, save water and fertilizer, and realize integrated water and fertilizer rice production.

Method used

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  • Paddy field fertilizing method based on biogas slurry water fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: 67.5kg N ha was poured into the paddy field 1 day before the transplanting of rice seedlings -1 Amount of biogas slurry (TN 0.06%, NH 4 + -N 0.43 mg kg -1 , TP 0.02%, TK 0.058%, pH 7.50 (H 2 O, 21°C)) as base fertilizer; 160.5kg N ha was poured 35 days after rice transplanting -1 A large amount of biogas slurry is used as top dressing.

Embodiment 2

[0024] Embodiment 2: 67.5kg N ha was poured into the paddy field 1 day before the rice seedlings were transplanted -1 Amount of biogas slurry (TN 0.06%, NH 4 + -N 0.43 mg kg -1 , TP 0.02%, TK 0.058%, pH 7.50 (H 2 O, 21°C)) as base fertilizer; 138kg N ha was applied 35 days after rice transplanting -1 Quantity of urea (N% = 46) and 22.5kg N ha -1 Potassium sulfate compound fertilizer (N:P 2 o 5 : K 2 O=15:15:15) as top dressing.

Embodiment 3

[0025] Embodiment 3: apply 67.5kg N ha one week before transplanting rice seedlings -1 Potassium sulfate compound fertilizer (N:P 2 o 5 : K 2 (O=15:15:15) was used as base fertilizer; 160.5kg N ha was poured 35 days after rice transplanting -1 Amount of biogas slurry (TN 0.06%, NH 4 + -N 0.43 mg kg -1 , TP 0.02%, TK 0.058%, pH 7.50 (H 2 O, 21°C)) as top dressing.

[0026] As shown in the table below, the following table discloses the effect of using biogas slurry instead of fertilization on rice growth, yield and rice quality

[0027]

[0028] Fertilizer application: 67.5kg N ha -1 Potassium sulfate compound fertilizer as base fertilizer, 138kg N ha -1 Urea (N%=46) and 22.5kg N ha -1 Potassium sulfate compound fertilizer as top dressing.

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Abstract

The invention discloses a paddy field fertilizing method based on biogas slurry water fertilizer. The method comprises the steps that paddy field additional fertilizer nitrogen content is determined, and total nitrogen content needed by paddy field fertilization is determined through statistics of applied fertilizer; the total usage amount of biogas slurry is determined according to the total nitrogen content; flatting of paddy field is conducted, fields used for planting paddy rice is processed, and the biogas slurry is added to the paddy field and taken as base fertilizer, wherein the content of the biogas slurry is one fourth to one third of the total usage amount of the biogas slurry; seed preparation and sprout cultivation are conducted, a rice variety is chosen, disinfection is conducted on seeds, seed soaking is conducted, the seeds wait to be used for sowing, or after the seed soaking and the sprout cultivation are conducted, transplanting is conducted; the rice seeds are sown or the well cultivated rice shoots are transplanted, and after the rice shoots grows for 30-40 days or the rice shoots are planted for 10-20 days in a scattered mode, biogas slurry of two thirds to three fourths of the total usage amount of the biogas slurry is applied in the paddy field.

Description

technical field [0001] The invention relates to the technical field of resource utilization of agricultural waste, in particular to a method for fertilizing paddy fields based on biogas slurry water and fertilizer. Background technique [0002] In recent years, with the adjustment of the agricultural industry structure and the construction of new countryside, the large-scale and intensive livestock and poultry breeding industry has developed rapidly, and the environmental problems caused by livestock and poultry excrement have become increasingly serious. [0003] According to the first national survey of pollution sources released by the Ministry of Environmental Protection in February 2010, in 2007, my country’s large-scale livestock and poultry farming industry produced 243 million tons of manure, 163 million tons of urine, and 12.6826 million tons of chemical oxygen demand. t, 1.0248 million tons of total nitrogen, 160,400 tons of total phosphorus, 2397.23 tons of copper,...

Claims

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Application Information

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IPC IPC(8): A01C21/00A01G16/00A01G22/22
Inventor 张进王敏艳李继光
Owner ZHEJIANG FORESTRY UNIVERSITY