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A nitrogen-saving and high-yield fertilization method for rice

A fertilization method, rice technology, applied in the direction of fertilization method, nitrogen fertilizer, fertilization device, etc., can solve the problems of low availability of trace elements in soil, loss of nitrogen fertilizer, low soil nitrogen-sulfur ratio, etc., to improve nitrogen use efficiency, reduce The effect of high nitrogen fertilizer dosage and high economic benefits

Active Publication Date: 2022-08-02
中农普罗丰禾湖北科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the prior art, such as serious loss of nitrogen fertilizer, low soil nitrogen-sulfur ratio, and low availability of trace elements in the soil, the present invention provides a nitrogen-saving and high-yield fertilization method for rice, which can promote rice production while reducing the amount of nitrogen fertilizer applied. high yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The present embodiment provides a fertilization method in a rice planting process, specifically:

[0032] (1) Applying base fertilizer: Weigh 60g of 3,4 dimethylpyrazole phosphate (DMPP), dissolve it in 200mL of water, then add it to 2Kg of slow-release elemental sulfur fertilizer and mix it evenly, and then mix it with 40Kg of compound fertilizer. The mass ratio of nitrogen, phosphorus and potassium in the compound fertilizer used is 18:10:16, and the effective content is 44%; that is, compared with the conventional compound fertilizer, the nitrogen content is reduced; after the paddy field is leveled, the field is raked Before, spread the above-mentioned mixed fertilizer at 40-50Kg / mu.

[0033] (2) The first top dressing: in the three-leaf and one heart stage of direct seeding rice or the greening stage of transplanted rice, the first top dressing is carried out, and 3Kg of urea and 100g of polymeric amino acids (polyaspartic acid with a mass ratio of 1:1 are mixed wi...

Embodiment 2

[0037] The difference between this example and Example 1 is: (1) when applying base fertilizer, the compound fertilizer is 40Kg, the DMPP content is 30g, and the content of the slow-release elemental sulfur fertilizer is 1.2Kg; (2) during the first top dressing, the Mix 3Kg urea with 37.5g polymeric amino acid; (3) in the second top dressing, mix 3Kg urea with 6Kg potassium chloride and 37.5g polymeric amino acid; (4) in the third and fourth top dressing, reduce 1Kg to two Urea with a urea content of less than 0.3% is mixed with 50 g of polymerized amino acid and 30 Kg of water.

Embodiment 3

[0039] The difference between this example and Example 1 is: (1) when applying base fertilizer, the compound fertilizer is 40Kg, the DMPP content is 100g, and the content of the slow-release elemental sulfur fertilizer is 4Kg; (2) during the first top dressing, 3Kg Mix urea with 150g polymeric amino acid; (3) in the second top dressing, mix 3Kg urea with 12Kg potassium chloride and 150g polymeric amino acid; (4) in the third and fourth top dressing, mix 1.5Kg biuret content Less than 0.3% urea is mixed with 150g polymeric amino acid and 30Kg water.

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Abstract

The invention discloses a nitrogen-saving and high-yield fertilization method for rice. By reducing the amount of nitrogen fertilizer used in the process of applying base fertilizer and four top-dressing fertilizers, and supplementing different substances according to different growth periods of rice, such as adding nitrification inhibitors to the base fertilizer to reduce the loss of nitrogen fertilizer; adding slow-release elemental sulfur fertilizer to It can effectively adjust the nitrogen-sulfur ratio of the soil and activate the activities of enzymes and microorganisms in the soil; adding polymeric amino acids to multiple top dressings is used to increase the activity of urease, so as to promote the conversion of urea into ammonia that can be used by rice, and to increase the content of trace elements in the soil. Through the synergistic cooperation of various substances in the fertilizer and the comprehensive application of fertilization technology, the purpose of reducing the amount of nitrogen fertilizer, greatly improving the nitrogen utilization rate and promoting the high yield of rice can be achieved. The fertilization method is simple and efficient, has high economic benefits, and is suitable for large-scale popularization and use.

Description

technical field [0001] The invention belongs to the technical field of crop planting, and in particular relates to a nitrogen-saving and high-yield fertilization method for rice and its application. Background technique [0002] Rice is one of the main food crops in the world and the most important food crops in my country, so the high-yield cultivation of rice is of great significance. Among them, the rational application of nitrogen, phosphorus and potassium fertilizers is the premise to ensure high rice yield. However, the current fertilization technology of rice still focuses on the habit of applying a large amount or even excessive nitrogen fertilizer on the basis of applying a certain amount of phosphorus and potassium fertilizer. Due to the large water consumption of rice, the leaching loss of nitrogen fertilizer and the loss of nitrification are serious, only about 30% of the nitrogen fertilizer applied by rice is absorbed and utilized by rice, that is, the utilizat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01C21/00C05G3/90C05G3/80C05G3/40C05G3/00
CPCA01C21/005C05G3/90C05G3/80C05G3/40C05D9/00C05G3/00C05C9/00C05G1/00C05D1/02Y02P60/21
Inventor 张道雄何华周亚王小伟邓健杨成唐强
Owner 中农普罗丰禾湖北科技有限公司
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