Closed weeding method for machine transplanting rice field

A closed weeding and paddy field technology, applied in the agricultural field, can solve the problems of high cost of stem and leaf weeding, insufficient weeding spectrum, and poor control effect, so as to make up for defects and limitations, have obvious synergistic effect, and improve control effect Effect

Inactive Publication Date: 2014-10-01
江苏省苏科农化有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of mixed growth of weeds in paddy fields, poor control effect of single use, insufficient weeding spectrum, high cost of stem and leaf weeding, short service life and safety to rice, a closed weeding method for machine-transplanted paddy fields was proposed. Thro

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  • Closed weeding method for machine transplanting rice field
  • Closed weeding method for machine transplanting rice field
  • Closed weeding method for machine transplanting rice field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 The first time sealing, the indoor biotesting of the optimal ratio of isoproturon, fenthiazamide, and ethoxysulfuron-methyl

[0021] The tested weeds: barnyardgrass, special-shaped sedge, and sausage, were collected from the experimental field of the Academy of Agricultural Sciences in October 2011, and after natural air-drying, put them into test paper bags and refrigerate them in the refrigerator.

[0022] Test method: Sow the three weed seeds of barnyardgrass, special-shaped sedge, and sweet sausage into pre-prepared plastic pots with a diameter of 30 cm that have been filled with nutrient soil, and use the bottom seepage irrigation method to make the soil Completely moist. Sow 50, 50, and 50 grains of barnyardgrass, special-shaped sedge, and sweet sausage in each pot, cover the weed seeds with fine soil after sowing, keep the soil moist, and then weigh a certain quality of mefenamide, isopropyl Methanol and ethoxysulfuron original medicines were fully dis...

Embodiment 2

[0050] Example 2 Second sealing, indoor bioassay of optimal ratio of isoproturon, butachlor and bensulfuron-methyl

[0051] The tested weeds: barnyardgrass, special-shaped sedge, and sausage, were collected from the experimental field of the Academy of Agricultural Sciences in October 2011, and after natural air-drying, put them into test paper bags and refrigerate them in the refrigerator.

[0052] Test method: Sow the three weed seeds of barnyardgrass, special-shaped sedge, and sweet sausage into pre-prepared plastic pots with a diameter of 30 cm that have been filled with nutrient soil, and use the bottom seepage irrigation method to make the soil Completely moist. Sow 50, 50, and 50 grains of barnyardgrass, special-shaped sedge, and sweet sausage in each pot, and cover the weed seeds with fine soil after sowing to keep the soil moist. Then take a certain quality of mefenamide, isoproturon and ethoxysulfuron-methyl original drug, add methanol to fully dissolve and dilute w...

Embodiment 3

[0078] Example 3 Field Test of Optimum Mixing Ratio of Chemicals and Twice Closed Weeding Technology in Machine Transplanted Rice Field

[0079] In the field weed damage closed test, the pesticides were adjusted according to the occurrence of weeds in various places in the previous year, and the two-time mixed pesticide application technology was adopted in the field. For the first time, the wettable powder prepared by mixing isoproturon, fenthiazamide and ethoxysulfuron-methyl in the traditional method was mainly used, and different dosages were used; the second time was with isoproturon, butachlor and benzazine. Sulfur-methyl is mainly wettable powder prepared by traditional mixing methods, and different doses are used. The control drug was 53% benzsulfuron-methyl wettable powder, and a blank control without drug was set at the same time.

[0080] The ratio and content of the best medicaments: the best ratio of isoproturon, fenthiazide and ethoxysulfuron-methyl after mixing...

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Abstract

The invention discloses a closed weeding method for a machine transplanting rice field. The closed weeding method comprises the steps of applying a weeding agent: performing primary closing, applying mefenacet, isoproturon and ethoxysulfuron into the rice field within 2-3 days before rice transplanting, and then performing secondary closing, and applying butachlor, isoproturon and bensulfuron methyl into the rice field within 7-15 days after rice transplanting. The invention provides a machine transplanting rice twice-closed weeding technology at first. By aiming at the characteristics that grassy weeds, broadleaf weeds and cyperaceae weeds grow in a hybrid manner in the current large-area mechanical planting process and the weeds have two weed growing rush hours in the field, a mode for respectively applying different weeding agents is adopted, so that the conventional method for 'primary closing, secondary killing and third supplementing' is broken through; medicaments are high in complementarity and obvious in mixing synergism effect; the herbicide controlling spectrum is expanded, the using amount is small, and the closed weeding method is safe to rice.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a closed weeding method for machine-transplanted rice fields. Background technique [0002] Rice is the food crop with the largest planting area and the largest yield in China, and the safety of rice production is the main issue of my country's food security. In recent years, my country has vigorously developed family farms and large planters, and advocated mechanical transplanting technology. However, due to the ecological environment of alternating dry and wet during the process of machine transplanting, weeds in dry fields and paddy fields occur simultaneously in machine-transplanted rice fields. Weed damage such as barnyardgrass, daughter, crabgrass, bermudagrass, and sagittarius is becoming more and more serious, which is the main obstacle affecting the high and stable yield of machine-transplanted rice. [0003] The seedlings of machine-transplanted rice are relativel...

Claims

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Application Information

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IPC IPC(8): A01N47/36A01P13/00A01G13/00A01N43/78A01N37/26
Inventor 邱光明亮胡存中孙以文
Owner 江苏省苏科农化有限责任公司
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