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Rice Field Grass Control Method

A technology for paddy fields and duckweed, applied in the field of paddy field grass control, can solve problems such as unreported research, achieve the effects of saving time, ensuring production, and reducing germination rate

Inactive Publication Date: 2017-12-01
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, it is also a good feed for raising ducks and fish in rice fields. Experts at home and abroad have done a lot of research on the use of duckweed, but there is no report on the use of duckweed and other biological methods to control weeds in rice fields.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Implementation time: June 2013-October 2013

[0037] Implementation location: Qingpu District, Shanghai (clay soil, pH 6.5)

[0038] Test plan: 3 treatments were implemented in this test, namely control CK (without any weeding behavior), conventional CH (according to conventional field management, regular manual weeding), experiments W1, W2, W3, W4, W5 (40g / m 2 , 80g / m 2 , 120g / m 2 、160g / m 2 、200g / m 2 duckweed, do not do other weeding behavior). Each treatment was repeated 3 times, arranged in random blocks, and the area of ​​each plot was 100m 2 , The field ridge was repaired up to 50cm.

[0039]1) With multi-root Ziping, less-root Ziping and Qingping as the initial materials, the varieties are expanded in a sterile room first, and the process conditions are: temperature 30°C, light intensity 3000±200lux, light-to-dark ratio 16:8 , pH is 4.5 in the complete culture solution cultured for 5 days; then each species of duckweed cultivated in the aseptic room is pl...

Embodiment 2

[0044] Implementation time: June 2013-October 2013

[0045] Implementation location: Qingpu District, Shanghai (clay soil, pH 6.5)

[0046] Experimental plan: In this experiment, 3 treatments were implemented, namely control CK (no weeding), conventional CH (regular field management, manual weeding), and test W (duckweed, no other weeding). Each treatment was repeated 3 times, arranged in random blocks, and the area of ​​each plot was 64m 2 , The field ridge was repaired up to 50cm.

[0047] 1) With multi-root Ziping, less-root Ziping and Qingping as the initial materials, the varieties are expanded in a sterile room first, and the process conditions are: temperature 30°C, light intensity 3000±200lux, light-to-dark ratio 16:8 , pH is 4.5 in the complete culture solution cultured for 5 days; then each species of duckweed cultivated in the aseptic room is placed in the greenhouse small pond (the size of length × width × height is 1m × 0.5m × 0.8m) for large-scale cultivation ...

Embodiment 3

[0052] Implementation time: June 2014-August 2014 (clay soil, pH 6.5)

[0053] Implementation location: Qingpu District, Shanghai

[0054] Experimental plan: In this experiment, 3 treatments were implemented, namely control CK (no weeding), conventional CH (regular field management, manual weeding), and test W (duckweed, no other weeding). Each treatment was repeated 3 times, arranged in random blocks, and the area of ​​each plot was 64m 2 , The field ridge was repaired up to 50cm.

[0055] 1) With multi-root Ziping, less-root Ziping and Qingping as the initial materials, the varieties are expanded in a sterile room first, and the process conditions are: temperature 30°C, light intensity 3000±200lux, light-to-dark ratio 16:8 , pH is 4.5 in the complete culture solution cultured for 5 days; then each species of duckweed cultivated in the aseptic room is placed in the greenhouse small pond (the size of length × width × height is 1m × 0.5m × 0.8m) for large-scale cultivation ,...

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Abstract

A method for controlling weeds in paddy fields, which uses three kinds of duckweed, namely, multi-rooted purple duckweed, few-rooted purple duckweed and green duckweed as initial materials, after I-level cultivation and II-level cultivation, they are mixed in proportion and evenly sprinkled on irrigation water among the rice fields. The invention adopts an ecological method to effectively control the germination of weeds in paddy fields, greatly reduces the germination rate of weeds in the field, reduces the harm of weeds, and ensures the production of crops. It can effectively reduce the amount of chemical herbicides used in paddy fields, save the time of manual or mechanical weeding in the field, and at the same time avoid the occurrence of weed resistance and the destruction of ecological balance. purpose of sustainable management.

Description

technical field [0001] The invention relates to biological application technology, in particular to a method for controlling grass in paddy fields. Background technique [0002] Weeds are one of the important components of plant diversity in rice field ecosystems. They are characterized by many types, vigorous growth, and difficult control, which have a great impact on crop production. Weeds in rice fields not only compete with rice for glory, grab water and fertilizer, but are also breeding grounds for diseases and insect pests, which reduce the yield and quality of rice. There are about 30,000 species of weeds in the world, of which about 1,800 species will have adverse effects on crop production, which in turn will lead to a crop yield reduction of up to 9.7%. Therefore, in the process of crop production, the field management of weeds is a very important link. [0003] There are many kinds of weeds in rice fields, and their vitality is tenacious and difficult to eradica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G31/00
Inventor 沈健英陈侠桦黄荣松郭利利
Owner SHANGHAI JIAO TONG UNIV
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