Paddy field oxygen-increasing and emission-reducing dry farming method

Abstract

The present invention relates to the technical field of crop planting and specifically discloses a paddy field oxygen-increasing and emission-reducing dry farming method. The method comprises the following steps: (1) after previous crops are harvested, whole straw is crushed evenly and thrown back into field; (2) dry farming operation is optimized; a single cropping rice area uses a one-turn and one-rotation tillage manner; or, a rice-wheat rotation area uses a tillage manner of rice seasonal turn over, dry rotation and soil turn up and wheat seasonal rotation; or, a double cropping rice areauses a tillage manner of lime spraying to modify the soil and rotation in winter and early season rice rotation and late season rice rotation in spring; and (3) unpowered slurry stirring and rice stubble burying are conducted. Compared with traditional water culture and preparation, the paddy field oxygen-increasing and emission-reducing dry farming method improves soil redox state in an early stage of rice growth, reduces a poisoning effect of reducing substances, improves soil granule structure, promotes root growth, reduces greenhouse gas emissions of paddy field and improves paddy field environment.

Description

technical field [0001] The invention relates to the technical field of crop planting, in particular to a dry farming method for increasing oxygen and reducing emissions in paddy fields. Background technique [0002] At present, returning the full amount of straw to the field is the main way to solve the problem of rice straw. The existing main rice cropping systems (one-ripening rice area in the north, rice-wheat rotation area, and double-cropping rice area) have problems such as large amount of straw returning to the field, difficulty in returning to the field, and high methane emissions from rice fields. The full amount of straw returned to the field has a great impact on the soil condition of the paddy field in the early stage of rice growth. Soak the soil before transplanting (or sowing) and continue to dry the field until the tillering period. During this period, the soil is always in a restored state. It is to aggravate the reduction state of rice fields, resulting in...

AI Technical Summary

Problems solved by technology

Dry land preparation is just changing the traditional soaking field preparation into soaking deep water and stirring and harrowing the field after land preparation, but after high-intensity beating, the soil porosity is reduced, and the oxygen content and effective nutrient content in the soil are reduced, which is not conducive to the early colony building of rice growth; There are still some problems in the production of direct seeding operations, such as the large amount of straw returning to the field, resulting in low seeding quality, serious weeds and high risk of lodging, etc.

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