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Paddy rice direct seeding method with weeding and lodging-resistant functions

A technology for lodging and rice resistance, applied in the field of agricultural cultivation, can solve the problems of restricting the popularization of direct seeding rice, affecting the stable yield of rice, uneven sowing, etc., and achieving the effects of reducing the lodging of direct seeding rice, improving the high and stable yield, and reducing the dosage.

Active Publication Date: 2018-11-16
CHONGQING ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, due to the uneven sowing and large amount of seeds used for direct-seeding rice, especially the difficulty in controlling weeds in the field and serious lodging, the stability of rice production has been affected, and the promotion of direct-directed rice has been restricted.

Method used

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  • Paddy rice direct seeding method with weeding and lodging-resistant functions
  • Paddy rice direct seeding method with weeding and lodging-resistant functions
  • Paddy rice direct seeding method with weeding and lodging-resistant functions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In 2017, Yuxiang 203 was used for live irrigation and weeding experiments:

[0031] Before the test site was used as a winter paddy field. On April 13, a live seeder was used to sow bud valleys. The treatment was not to kill weeds, and the fertilization level before sowing was every 667m 2 Apply 10 kg of pure N, and when the above conditions are consistent, the irrigation time is 1.5 leaves, 2.5 leaves and 3.5 leaves of the seedlings.

[0032] Field observations show that:

[0033] When the seedlings have 1.5 leaves, barnyardgrass and other gramineous weeds have not yet germinated. When the seedlings have 2.5 leaves, field hybrids, especially barnyard grass, have generally germinated. When the seedlings have 3.5 leaves, barnyard grass and other weeds grow better, and some have surpassed the seedlings.

[0034] On May 15, when the seedlings have 4 leaves, all the field water is drained, every 667m 2 Use 20mL of 10% bispyribac and 15g of 10% pyrazosulfuron-methyl, mix w...

Embodiment 2

[0039] Control effect on weeds

[0040] In 2018, Yuxiang 203 was used for live weeding test:

[0041] A. Test treatment: large-scale test was adopted, and herbicides were sprayed. See Table 1 for specific application chemicals and operation schemes.

[0042] Table 1 Herbicide application operation table

[0043]

[0044] B. Field management: Sowing on April 3, the sowing specification is 25cm × 16cm, 4 to 5 grains per hole; the nitrogen application rate is 8kg / mu, and the mass ratio of nitrogen, phosphorus and potassium active ingredients (N 2 O:P 2 o 5 :K 2 O) is 2:1:2, one-time application before sowing, sowing on April 3 (treatment 1 applies closed herbicide), and on April 27, fixed-point investigations are carried out on the types and quantities of weeds in each treatment; treatment 1 and treatment 2 use 4.5 Leaf stage herbicide, treatment 3 (control, artificial weeding).

[0045] C. Investigation of the control effect of herbicides

[0046] On April 27th, May 7t...

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Abstract

The invention relates to a paddy rice direct seeding method with weeding and lodging-resistant functions, and belongs to the technical field of agricultural cultivation. The paddy direct seeding method comprises the following steps that 1, it is kept that ditch surfaces of a field is free of water, and paddy direct weeding is carried out; 2, when one leaf and one core grow on each paddy seedling,field water irrigation is carried out; 3, when 3.5-5 leaves grow on each paddy seedling, field water is drained, a weeding agent is applied, and 2-3 days later, field water irrigation is carried out;4, when the number of productive ear in every 667 m<2> of colony reaches 80% or the number of seedlings reaches 120,000, field drying is carried out till field soil cracks, and field water irrigationis carried out again when white paddy roots appear on the field surface. The method can effectively prevent and remove weeds, reduce the consumption of the weeding agent, reduce direct-seeding paddy lodging and effectively improve the stable yield of direct-seeding paddy and the quality of rice.

Description

technical field [0001] The invention relates to the technical field of agricultural cultivation, in particular to a weeding and lodging-resistant rice direct seeding method. Background technique [0002] Rice is the most important food crop in our country. Ensuring the safety of national rations is a national strategic need to firmly hold the "rice bowl" in our own hands. With the development of urbanization and the increase of the cost of growing grain, the benefit of rice production shows a downward trend. The problem of who will farm the fields has become increasingly serious. To achieve cost-saving and income-increasing rice production and increase the income of farmers who grow grain, it is necessary to promote cost-effective and efficient technologies and reduce planting costs. [0003] In recent years, direct seeding of rice has been gradually accepted by people because of its features of reducing complex procedures and labor intensity such as seedling raising, tran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/22
CPCA01G22/22
Inventor 李经勇刘强明段秀建唐永群姚雄肖人鹏张巫军
Owner CHONGQING ACAD OF AGRI SCI
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