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Water management planting method for reducing content of cadmium in rice

A planting method and rice cadmium technology, which are applied in the fields of botanical equipment and methods, horticultural methods, rice cultivation, etc., can solve problems such as unfavorable mechanized harvesting and affecting yield, and achieve the effects of easy implementation and simple operation.

Inactive Publication Date: 2015-12-23
四川省农业科学院分析测试中心
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Problems solved by technology

However, at present, agricultural water resources are extremely scarce. Under the conditions of field production, it is impractical to require flooding during the entire growth period. From the perspective of scientific management, flooding during the entire growth period will lead to many invalid tillers, affecting yield, and long-term soaking of fields. In water, it is not conducive to the current mechanized harvesting, and farmers will not accept it

Method used

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  • Water management planting method for reducing content of cadmium in rice
  • Water management planting method for reducing content of cadmium in rice
  • Water management planting method for reducing content of cadmium in rice

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Experimental program
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Effect test

Embodiment

[0018] Three paddy fields were randomly selected in Fangyi Village, Yangwan Village, and Bainian Village, with an area of ​​about one mu. They were divided into two parts. One part was operated according to farmers' habits, and the other half was the flood management part. This part was 15 days before flowering. According to the customary management mode of farmers, the treatment group experiment started water management 15 days before flowering, and the specific scheme is shown in Table 1.

[0019] Table 1. Test plan

[0020]

[0021] Part of the rice samples for farmers' customary operation and flood management were collected 15 days, 20 days, 25 days, 30 days and 35 days after rice flowering, respectively, by the multi-point mixed sampling method. SPSS17.0 statistical software was used to carry out mathematical statistical analysis on the results, the results are shown in Figure 1-3 , the lowercase letter a on the vertical column in the figure indicates the significanc...

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Abstract

The invention provides a method for controlling the content of cadmium in rice through simple water management at the critical period when cadmium enters rice under the field production condition. The water management planting method for reducing the content of cadmium in rice comprises the steps of 1, conducting normal field drying, controlling ineffective tillering and then conducting waterflooding; 2, draining the field 15-20 days after rice blossoms till harvesting. Under the condition that the water resource is limited, the critical period when the heavy metal cadmium enters rice is seized, effective water management is conducted to control the content of cadmium, the conventional field drying technique is not denied, mechanized harvesting is achieved, and the method is easy to operate and implement.

Description

technical field [0001] The invention relates to a method for controlling the cadmium content of rice, in particular to a simple and easy flooding method for controlling the cadmium content of rice. Background technique [0002] Rice is one of the main grains in our country, and more than 60% of the country's population is dominated by rice. As a crop with strong cadmium enrichment ability, rice is closely related to the cadmium content in the soil environment. In recent years, the National Survey of Heavy Metal Pollution in Soil, hosted by the Ministry of Environmental Protection and the Ministry of Agriculture, also showed that the national cultivated land soil point exceeding the standard rate was as high as 19.4%, among which cadmium pollution was the most serious, and the sample point exceeding standard rate reached 7.0%. The annual production of cadmium The content of agricultural products exceeding the standard has exceeded 1.46 billion kg, and the situation is very s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G16/00A01G7/00A01G22/22
CPCA01G7/00A01G22/22
Inventor 杨定清雷绍荣周娅谢永红邓强罗丽卉王棚
Owner 四川省农业科学院分析测试中心
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