Herbicide-free direct seeding cultivation method for rice

Abstract

The invention discloses a herbicide-free direct seeding cultivation method for rice. The method comprises the steps as follows: a flood-resistant and hypoxia-resistant rice variety in a germination period is selected for seed soaking and germination acceleration; the flooding depth of a rice field is controlled to be 2 + / -1 cm, and harrowing is conducted after base fertilizer is applied, so that soil particles are fully suspended, chest-broken rice seeds are directly sown immediately after harrowing is completed, the rice seeds are covered with post-sedimented suspended soil particles after sedimentation, drainage is not performed after sowing, and the water depth of the highest position of soil on the field surface after mud clarification is controlled to be larger than 1 cm; after seedlings grow to three leaves and one bud, controlling the water depth of the highest position of the soil on the field surface to be greater than 2cm, and keeping the field surface flooded; after the seedlings grow to five leaves and one bud, conventional fertilizer and water management is performed, and no herbicide is used in a whole cultivation process. According to the method, the production costof rice planting is reduced, more importantly, the herbicides are not applied, agricultural ecological environment construction is facilitated, the requirement for sustainable development of agricultural economy is met, and the living quality and health level of people can be improved.

Description

technical field [0001] The invention belongs to the field of rice cultivation, and in particular relates to a herbicide-free rice direct seeding cultivation method. Background technique [0002] With the advancement of science and technology and the improvement of people's living standards, the labor cost of agricultural production has risen rapidly. Simplifying agronomic techniques has become an urgent need for agricultural production, and farmers' spontaneous direct seeding of rice has emerged as the times require. In traditional rice production, the cost of raising seedlings and transplanting per mu of paddy field is more than 200 yuan. Direct seeding of rice not only saves the cost of raising seedlings and transplanting, but more importantly, reduces the demand for labor in rice production and promotes agricultural labor. transfer to other industries. [0003] However, the government management department has not supported direct seeding of rice. There are three main re...

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Problems solved by technology

[0003] However, the government management department has not supported direct seeding of rice. There are three main reasons. One is that the rice field must be drained before direct seeding, and the water discharged after applying basal fertilizer will pollute the river water; , weed seeds also germinate at the same time, so the amount of herbicides used is increasing. Excessive application of herbicides is not only not conducive to the improvement of the sanitary quality of agricultural products and the construction of farmland environments, but also induces stronger weed resistance; the third is The seeds of current rice varieties are not resistant to flooding, and there are no seedlings in areas that have not been drained, and the direct seeding yield of rice is very unstable due to the serious lack of seedlings

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