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Rice seedling raising method

A technology for raising rice seedlings and rice seeds, applied in the field of rice seedling raising, can solve the problems of reducing fertilizer utilization rate, uneven fertilization, and low efficiency, and achieve the effect of improving fertilizer utilization efficiency and solving uneven artificial fertilization

Inactive Publication Date: 2018-01-12
CHINA NAT RICE RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to muddy rice fields, most areas can only be fertilized manually, which is labor-intensive, inefficient, and labor-intensive. At the same time, it is easy to cause uneven fertilization, and the fertilizer cannot be applied deep into the soil, which may easily cause runoff and decomposition of fertilizer. loss, lower fertilizer use efficiency

Method used

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  • Rice seedling raising method

Examples

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Effect test

Embodiment 1

[0033] figure 1 Show the step flowchart of rice seedling raising method of the present invention, it comprises the steps:

[0034] S1, seedling-raising substrate laying tray: prepare a seedling tray, and lay the substrate in the seedling tray; wherein, the seedling tray is a cuboid structure, its length is 55-60cm (preferably 57.5cm), and its width is 25-30cm ( is preferably 27.5cm), and the thickness of the matrix laid in the seedling tray is 1.8-2.0cm;

[0035] S2, fertilizer laying tray: spread fertilizer on the substrate in the seedling tray; preferably, the fertilizer is coated slow / controlled release urea, and the fertilizer application rate is 350-400 grams of pure nitrogen / every seedling tray (preferably is 380 grams / per seedling tray), and the fertilizers have a longer release period to correspond to the "S" type release characteristic curve, which can basically match the nutrient requirements of crops, and have the advantages of "efficiency enhancement, fertilizer s...

Embodiment 2

[0051] The difference between this example and Example 1 is that in step S2, the film is coated with slow / controlled release of urea, and the fertilizer application rate is 350 grams of pure nitrogen per seedling tray; and the fertilizers all have a longer release period To correspond to the "S" type release characteristic curve, it can basically match the nutrient requirements of crops, and has the advantages of "efficiency increase, fertilizer saving, labor saving, environmental protection" and so on;

[0052] On this basis, in steps S1 and S4, the matrix includes: 50% of crop straw powder, 19% of mushroom chaff, 9% of peat, 7% of water retaining agent, 6% of binder and accelerator Root dose 0.3%, and the rest are auxiliary materials.

[0053] The seedlings were raised in about 20 days and transplanted. During the seedling raising process, there was no phenomenon of fertilizer damage to the seedlings. After that, the conventional rice planting operations were followed, and p...

Embodiment 3

[0055] The difference between this example and Example 1 is that in step S2, the coating slows down / controlled release of urea, and the fertilizer application rate is 400 grams of pure nitrogen per seedling tray; and the fertilizers all have a longer release period To correspond to the "S" type release characteristic curve, it can basically match the nutrient requirements of crops, and has the advantages of "efficiency increase, fertilizer saving, labor saving, environmental protection" and so on;

[0056] On this basis, in steps S1 and S4, the matrix includes: 60% of crop straw powder, 16% of mushroom chaff, 8% of peat, 5% of water retaining agent, 5% of binder and accelerator Root dose 0.2%, and the rest are auxiliary materials.

[0057] The seedlings were grown in about 20 days and transplanted. During the seedling raising process, there was no phenomenon of fertilizer damage to the seedlings. After that, the conventional rice planting operations were followed, and phosphor...

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Abstract

The invention discloses a rice seedling raising method which comprises the following steps: S1, traying a seedling raising medium, namely preparing a seedling tray, and laying the medium in the seedling tray; S2, traying fertilizers, namely laying fertilizers on the medium in the seedling tray; S3, seeding, namely spreading rice seeds in the seedling tray; S4, covering the medium, namely coveringthe medium on rice seeds; and S5, performing seedling raising management in a greenhouse, namely transplanting the seedling tray into a heat preservation site, and performing seedling raising management. In the seedling raising process, the novel rice medium raising technology and sustained / controlled release fertilizer application method are combined, one-off application of the fertilizer in thewhole growth period of rice can be completed while seedling raising. The method is simple and high-efficiency, and rice seedling raising and fertilization can be synchronously realized.

Description

technical field [0001] The invention relates to the field of rice seedling raising, in particular to a rice seedling raising method. Background technique [0002] Since the beginning of the 21st century, under the leadership and attention of the Chinese government and relevant departments, the mechanization of rice production, especially the machine-transplanted rice, has made great progress, and the comprehensive level of mechanization has been continuously improved. [0003] There are two peak periods of fertilizer demand in rice growth, namely the tillering period and the booting period, in which urea is a high-quality nitrogen fertilizer with high nitrogen content, fast fertilizer efficiency and large dosage. However, after urea is applied to the soil, it will be rapidly decomposed and converted into ammonia under the action of urease and lost; the growing environment of rice from turning green to tillering stage needs sufficient water and nitrogen nutrients, and runoff ...

Claims

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Application Information

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IPC IPC(8): A01G22/22A01G24/22A01G24/28C05G3/00C05G3/08C05G3/90
Inventor 曹小闯金千瑜朱练峰张均华朱春权王奉斌文孝荣
Owner CHINA NAT RICE RES INST
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