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Paddy rice water and fertilizer regulation and control technology

A technology, rice technology, applied in rice cultivation, fertilization methods, fertilization devices, etc., can solve the problems of nutrient loss, irrigation, rice yield and nutrient absorption, etc., and achieve good economic and environmental benefits

Inactive Publication Date: 2012-06-27
INST OF SOIL & FERTILIZER FUJIAN ACADEMY OF AGRI SCI
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  • Claims
  • Application Information

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Problems solved by technology

At present, there have been many reports on the research on fertilization and rice yield and nutrient uptake, but there are not many studies on irrigation and rice yield and nutrient uptake. There is little research on churn

Method used

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  • Paddy rice water and fertilizer regulation and control technology
  • Paddy rice water and fertilizer regulation and control technology
  • Paddy rice water and fertilizer regulation and control technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] 1 Materials and methods

[0011] 1.1 Basic situation of the test site

[0012] The experiment was set up in the rice planting base of Xitou Village, Baisha Town, Minhou County, Fuzhou City, Fujian Province. The soil-forming parent material was low-hill red soil slope deposits, and the soil type was yellow mud field. The experiment is located in the southeast of Fujian Province. The climate is a subtropical marine monsoon climate. The summer is long but not hot, and the winter is short and not cold. The climate is mild and the annual average temperature is 19.5°C. The annual rainfall is 1200-2100 mm, the annual average precipitation is 1673.9 mm, and the annual average rainy day is 150 days, accounting for 41.8% of the annual days. The annual total radiation is 103.7~109.7 kcal·cm -2 , with an average of 107.3 kcal·cm -2 . The annual frost-free period is 240~320 days. The basic physical and chemical properties of the soil in the experimental plow layer (0-20 cm) ...

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Abstract

The invention discloses a paddy rice water and fertilizer regulation and control technology, namely an optimized fertilization and water-saving irrigation technology. The key points of the technology comprise: (1) 120 kg.hm<-2> of pure N, 60 kg.hm<-2> of P2O5 and 120 kg.hm<-2> of K2O are applied to quarterly paddy rice; and (2) surface water level of -3-3 cm is kept during paddy rice planting, apart from field drying period. By using the technology, the paddy rice yield and the nutrient absorption are equivalent to those of the conventional water and fertilizer management method of rice farmers; but total nitrogen loss of 11.5 kg.hm<-2>.a<-1> and total phosphorous loss of 0.2 kg.hm<-2>.a<->1 of paddy field surface runoff can be averagely reduced respectively, the reduction ratios are 29.8 percent and 37.1 percent; meanwhile, irrigation water can be saved by 900.5 m<3>.hm<-2>.a<-1>, so that better economic benefit and environmental benefit are achieved.

Description

technical field [0001] The invention belongs to the technical field of rice irrigation and fertilization, in particular to a new fertilization technology for water-saving irrigation and reduction of nitrogen and phosphorus non-point source pollution in rice fields. Background technique [0002] Rice is the main food crop in the world, and it is also the most important food crop in China (especially in southeastern China). Driven by factors such as future population increase, improvement of people's living standards, decrease in the amount of arable land, intensification of structural contradictions in varieties, and low comparative benefits of rice cultivation, food supply will face severe challenges. Rational irrigation and fertilization are the two most important measures to improve rice yield and quality. However, in order to pursue higher yields, farmers have generally blindly applied large amounts of fertilizers in recent years, making the negative ecological effects ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C21/00A01G16/00A01G22/22
Inventor 黄东风李卫华王利民林新坚
Owner INST OF SOIL & FERTILIZER FUJIAN ACADEMY OF AGRI SCI
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