Method for reducing and controlling losses of nitrogen and phosphorus of rice

A rice field, nitrogen and phosphorus technology, applied in the field of phosphorus loss and nitrogen reduction in rice fields, can solve problems such as restricting sustainable agricultural development, soil and groundwater pollution, and reduction of fertilizer utilization rate, and achieves inhibition of evaporation loss, reduction of disturbance damage, and ventilation. Enhanced effect

Inactive Publication Date: 2010-06-16
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Excessive fertilization can not further increase crop yields, but instead reduces the utilization rate of chemical fertilizers, increases losses, and brings negative impacts on the environment. It not only reduces the cleaning function of rice fields, but also leads to soil and groundwater pollution, causing river pollution. and eutrophication of lake water quality, endangering human health and restricting the sustainable development of agriculture

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for reducing and controlling losses of nitrogen and phosphorus of rice
  • Method for reducing and controlling losses of nitrogen and phosphorus of rice
  • Method for reducing and controlling losses of nitrogen and phosphorus of rice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] figure 1 figure 2 Shown in , 1, field ridge; 2, surrounding ditch; 3, box surface; 4, box ditch; 5, waist ditch.

[0031] see figure 1 ,

[0032] 1. No-tillage, standard opening. Open a 25 cm wide and 30 cm deep ditch at a distance of 80 cm from the ridge around the paddy field to see the bottom of the plow. The box ditch is 20cm wide, 15cm deep, and the box surface is 145cm wide. The soil shoveled from the ditch is evenly spread on the box surface to break up the mud and reach the level of the field.

[0033] 2. Level the van surface. Use a piece of wood with a length of 1.6m and a width of 20-30cm, on which a bag containing 15-20kg of soil is tied, and one person pulls it with a rope while walking and leveling it.

[0034] 3. Apply enough base fertilizer. Since film-mulching cultivation adopts a clear fertilization method, one-time full-layer formula fertilization in front of the leveling box, reapplying base fertilizer, applying more farmyard manure, and full...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for reducing and controlling losses of nitrogen and phosphorus of rice, belonging to a method of zero tillage and standard open tillage of the rice and comprising the following steps of: digging a surrounding ditch around the rice; digging a waist ditch and a side ditch for dividing the rice into several side surfaces; flattening the side surfaces; fertilizing enough basic fertilizers; coating films for tightly attaching ground films to clay on the side surfaces; pressing both sides by using the clay; transplanting the rice; keeping water in the ditches rather than in the film surfaces; drying the water in the rice within 15 days before the rice is ripe; and leaving low rice stubble in rice harvest. In the method, irrigation with water saving is realized, the purpose for reducing and controlling the losses of nitrogen and phosphorus of the rice is realized, and a theoretical basis and a realizing mode are supplied for scientifically and reasonably building the environmentally friendly utilization mode of the rice.

Description

technical field [0001] The invention belongs to a construction technology of an environment-friendly utilization mode of paddy fields, and is a new method for reducing the loss of nitrogen and phosphorus in paddy fields. Background technique [0002] The contribution of rice production in ensuring global food security and promoting world social and economic development has attracted worldwide attention. my country is the largest rice producer and consumer country in the world, and rice production provides ration consumption guarantee for more than 60% of the population in my country. In addition to product supply, the more important rice paddy wetland ecosystem is an important ecological unit for environmental protection. [0003] For half a century, countries all over the world have regarded increasing the application of chemical fertilizers as an important agricultural measure to increase rice production. my country is one of the countries with the highest amount of chem...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A01G1/00A01C21/00A01B79/00A01G13/02
CPCY02P60/20
Inventor 廖晓勇陈治谏王海明周梦佳涂恩强
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap