Double-cropping no-tillage seedling-throwing straw-to-farmland rice high-yield and high-efficiency production method

Abstract

The invention discloses a double-cropping no-tillage seedling-throwing straw-to-farmland rice high-yield and high-efficiency production method which comprises the following steps of: a, cleaning a ditch and draining in winter, to be specific, ditching to let rice field leakage water go in winter so as to keep no accumulated water on a field surface before seedling throwing of early season rice; b, performing no-tillage planting and management on the early season rice, to be specific, growing seedlings of the early season rice by using a plastic soft tray, throwing the seedlings when the seedlings have 3.5-4.5 leaves, and wetting as well as irrigating the early season rice in the whole process; c, utilizing straws of the early season rice, to be specific, remaining high stubbles while harvesting the early season rice; d, performing no-tillage planting and management on late rice, to be specific, growing seedlings of the late rice by using the plastic soft tray or growing the seedlings in a dry manner without the tray, and adopting an irrigation mode of irrigating shallowly and exposing the field; e, utilizing the straws of the late rice, to be specific, remaining high stubbles while harvesting the late rice. The double-cropping no-tillage seedling-throwing straw-to-farmland rice high-yield and high-efficiency production method solves the problems of great tillage labor intensity, slow nutrient transformation, easy runt seedlings and no growth of the rice, late maturity, low yield and the like of soil gleyization and secondary soil gleyization rice production in south rice areas, is a matured production technology for improving low-yield rice fields in soil gleyization and secondary soil gleyization, and achieves great application and generalization values in the aspects of reducing agricultural production cost, improving soil organic matters, decreasing fertilizer applying amount, increasing rice yield, improving moisture and fertility preservation performances of soil and the like.

Description

technical field [0001] The invention relates to a rice production method for double-crop no-tillage throwing seedlings and returning straw to the field. Background technique [0002] Soil gleization is when the soil is in a state of long-term infiltration due to groundwater saturation or supersaturation, and the redox potential (Eh) of some layers of the soil within 1m is below 200mv, and the formation of Fe and Mn reduction occurs. The soil formation process of gray streak layer, saprolite layer, green mud layer and peat layer. Soil secondary gleization refers to the process of soil (mainly paddy soil) changing from non-gleization type to high-level gleization type due to human reasons such as plowing or irrigation, and it is often manifested as a green mud layer in the 50cm soil body. There are more than 4 million hectares of gleization or secondary gleization rice fields in southern my country, about half of which are cold-soaked fields, which are widely distributed in r...

AI Technical Summary

Problems solved by technology

[0005] The present invention solves the labor intensity of plowing in the production of gleization and secondary gleization in rice fields in the south by cooperating with double-crop no-tillage, double-crop seedling throwing and full rice straw returning to the field and related fertilization and field management measures. Nutrient conversion is slow, rice is prone to stiff seedlings, late maturity and low yield, etc. It plays a significant role in reducing agricultural production costs, improving soil organic matter, reducing chemical fertilizer application, increasing rice production, and improving soil water and fertilizer retention performance.