Method for one-time fertilizer application for rice

A fertilization method and rice technology, which are applied in the directions of fertilization method, fertilization device, application, etc., can solve the problems of inability to meet the nutritional needs of rice and increase the cost of artificial fertilization.

Pending Publication Date: 2017-06-27
CHINA NAT RICE RES INST
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  • Application Information

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Problems solved by technology

The above published patents can only realize single-level deep fertilization of rice, and cannot meet the nutritional needs of rice in different

Method used

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  • Method for one-time fertilizer application for rice
  • Method for one-time fertilizer application for rice

Examples

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Example Embodiment

[0027] Example 1

[0028] The first method to realize the one-time fertilization of rice is double-ditch fertilization, and the double-ditch fertilization device is installed in the existing rice transplanter and direct seeding machine. Ditching fertilization device such as figure 1 As shown, it is mainly composed of a set of fertilizer tanks 1 containing slow-release fertilizers and quick-acting fertilizer tanks 7, fertilizer wheels 2, fertilizer tubes 3, and ditching devices. The ditching device consists of a set of "V"-shaped ditch openers 4 and 5 for deep and shallow ditching. The depth of the deep groove is 15cm, the upper mouth is 15cm wide, and the upper mouth of the shallow groove opener is 5cm wide. , The lower mouth is 3cm wide and 3cm deep. Shuanggou fertilization can realize the application of slow-release fertilizer and quick-acting fertilizer separately, and the application ratio is recorded as 3-5:1 according to the amount of nitrogen. The NPK ratio of the slow a...

Example Embodiment

[0029] Example 2

[0030] The second method realizes that the one-time fertilization of rice is inclined plane fertilization, and the existing rice transplanter and direct seeding machine are equipped with an inclined plane ditch fertilization device. Fertilization components such as figure 2 , It is mainly composed of fertilizer tank 8, fertilizer wheel 2, fertilizer tube 3 and inclined surface trench device for containing slow and controlled release fertilizer and quick-acting fertilizer. The section of the inclined face opener 9 for sloping ditching is a right-angled triangle, the bottom angle of the opener is 25 degrees, and the right-angle side is 15cm deep, so that a 65-degree slope can be opened, and fertilizer is applied on the slope. After the soil is covered, the fertilizer is distributed along the slope. The burial depth of the fertilizer close to the rice seedlings is shallow, and the burial depth of the fertilizer far away from the rice seedlings is deep, so as to ...

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Abstract

The invention relates to a method for one-time fertilizer application for rice. The method comprises two fertilizer application modes. According to the first fertilizer application mode, one deep V-shaped ditch and one shallow V-shaped ditch are formed between two adjacent rows of rice, a slow/control release fertilizer is applied in the deep ditch, and a quick-acting fertilizer is applied in the shallow ditch; and the fertilizer application ratio of the slow/control release fertilizer to the quick-acting fertilizer is (3-5):1 by nitrogen amount. According to the second fertilizer application mode, a bevel ditch is opened between the two rows of adjacent rice, and then the slow/control release fertilizer and the quick-acting fertilizer with a weight ratio of (3-5):1 by nitrogen amount are applied in the bevel ditch, and the controlled-release time of the slow/control release fertilizer is 40 d, 60 d and 90 d. Shallow application of the quick-acting fertilizer and deep application of the controlled release compound fertilizer are combined, nutritional requirements in whole growth period of rice are met, one-time fertilizer application is performed, and topdressing is not needed; and one-time fertilizer application is implemented through deep ditch and shallow ditch combination and the bevel fertilizer application method. According to mechanical transplanting and mechanical direct seeding seedling growth features, the shallow layer fertilizer ensures nutrient supply at an earlier growing stage, and the deep layer fertilizer ensures nutrient supply at a medium and later growing stage.

Description

Technical field [0001] The invention relates to the technical field of agricultural production, in particular to a one-time fertilization method for rice. Background technique [0002] One of the important ways to increase rice production is to increase nitrogen fertilizer. In the past 50 years, the world's food production has risen sharply, partly because of the increase in fertilizer input, especially nitrogen fertilizer. At present, the average single-season nitrogen fertilizer consumption in my country's rice fields is 180kg / hm 2 , 75% higher than the world's unit area consumption. As nitrogen fertilizer is mainly applied by artificial surface application method, one-time fertilization can easily cause excessive nitrogen concentration in the field, causing problems such as burning seedlings, severe fertilizer loss, and lack of fertilizer in the late stage of rice growth. Therefore, the split fertilization method is generally used at present, which is not only time-consuming ...

Claims

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Application Information

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IPC IPC(8): A01C21/00
CPCA01C21/00
Inventor 向镜朱德峰
Owner CHINA NAT RICE RES INST
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