Rice field non-point source pollution emission reducing and rice yield increasing method

A non-point source pollution and paddy field technology, applied to water pollutants, soil preparation methods, rice cultivation, etc., can solve the problems of low biochar utilization efficiency, increase crop yield, and biochar loss, so as to reduce the risk of non-point source pollution and improve Crop yield, effect of promoting growth and development

Active Publication Date: 2016-12-21
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Application Information

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Problems solved by technology

Surface application will easily cause biochar to be lost with water and air transport, while mixed applica

Method used

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  • Rice field non-point source pollution emission reducing and rice yield increasing method
  • Rice field non-point source pollution emission reducing and rice yield increasing method
  • Rice field non-point source pollution emission reducing and rice yield increasing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1 investigated the impact of a kind of paddy field non-point source pollution reduction and rice production increase measures on paddy field surface water nitrogen concentration (ammonia nitrogen, nitrate nitrogen and total nitrogen). In 2015, a rice pot experiment was established at the test field of Jiangsu Academy of Agricultural Sciences, and three treatments were set up, namely no application of biochar (CKU), conventional application of biochar (W700-CM, biochar application rate 0.5% w / w, The depth of application is 15cm), the biochar application scheme of the present invention (W700-SM, biochar application rate 0.5%w / w, soil-biochar buffer layer is 5cm, and wood vinegar pH=4.0, active ingredient 5% , the amount of wood vinegar to be applied is 100L / ha, the shallow plowing depth is 5cm, and the biochar is prepared from wheat straw at a preparation temperature of 700°C, and the specific surface area of ​​biochar is 80m 2 / g, biochar covering layer 3cm). ...

Embodiment 2

[0040] Example 2 Effects of the new rice field non-point source pollution reduction and rice production increase measures on the inhibition and control of ammonia nitrogen in the surface water of paddy fields

[0041] This embodiment has investigated the adsorption effect of a new type of paddy field non-point source pollution reduction and rice production increase measures on ammonia nitrogen ( figure 1 ). The specific operation mode of this embodiment is similar to that of Embodiment 1. After the application of basal fertilizer, tiller fertilizer and panicle fertilizer, compared with the application of fertilizer but no application of biochar, under the treatment of the new biochar application scheme, the ammonia nitrogen in the surface water of the paddy field decreased by an average of 33.57mg / L, while under the conventional application scheme, the surface water of the paddy field decreased by 33.57mg / L. Ammonia nitrogen decreased by an average of 16.1mg / L. The new bioch...

Embodiment 3

[0042] Example 3 Effects of novel paddy field non-point source pollution reduction and rice production increase measures on the inhibition and control of nitrate nitrogen in paddy field surface water

[0043] This embodiment has investigated the adsorption effect of a new type of paddy field non-point source pollution reduction and rice production increase measures on nitrate nitrogen ( figure 2 ). The specific operation mode of this embodiment is similar to that of Embodiment 1. After the application of basal fertilizer, tillering fertilizer and ear fertilizer, compared with the application of fertilizer but no application of biochar, under the treatment of the new biochar application scheme, the surface water nitrate nitrogen of the paddy field decreased by an average of 1.62mg / L, while under the conventional application scheme, the paddy field The average increase of nitrate nitrogen in field surface water was 0.43mg / L. The new biochar application scheme can significantl...

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Abstract

The invention discloses a rice field non-point source pollution emission reducing and rice yield increasing method, and belongs to the field of biochar agriculture application. According to the scheme, the method comprises the three steps that 1, biochar is applied to the soil surface to form a biochar covering layer; shallow ploughing is conducted on the biochar covering layer; soil is irrigated duly to form a soil-biochar buffer layer. According to the method, the absorption capacity of the biochar to rice filed surface nitrogen is improved, and a green and environment-friendly rice field surface water nitrogen emission reducing method is formed; by changing the biochar application mode, the absorption capacity of the biochar to rice field surface nitrogen can be improved on the conditions that no extra substance input is increased, and external energy is not applied, and then the non-point source pollution risk caused by rice field surface water is reduced.

Description

technical field [0001] The invention relates to a method for reducing emission of non-point source pollution in paddy fields and increasing rice production. Specifically, it is a high-efficiency biochar application that improves the nitrogen adsorption capacity of biochar in actual production, increases rice production, and takes into account both environmental protection and agriculture. method. Background technique [0002] paddy field surface water [0003] In recent years, due to excessive fertilization and unreasonable fertilization structure, a large amount of nitrogen elements have been input into rivers, rivers, and lakes, causing increasingly serious agricultural non-point source pollution problems, resulting in deterioration of water quality and aggravated eutrophication of water bodies. More than 50% of the nitrogen sources in lakes come from agricultural non-point source pollution. For example, in the Taihu Lake area, agricultural non-point source nitrogen disch...

Claims

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Application Information

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IPC IPC(8): A01B79/02A01G16/00C02F1/28C02F101/16A01G22/22
CPCA01B79/02A01G22/22C02F1/283C02F2101/16
Inventor 刘杨冯彦房吴迪侯朋福杨林章薛利红高倩王悦满
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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