Dry direct sowing cultivation method for double-cropping late rice

Abstract

The invention discloses a dry direct sowing cultivation method for double-cropping late rice. The method comprises the following steps: a water discharging opening in a rice field is opened in the ripening stage of early-season rice for slow drying of the field, rice stubbles are reserved after the early-season rice is harvested, and a harvester is utilized to uniformly spread harvested and threshed straw on the rice stubbles in the rice field to form a rice carpet; a skid-mounted grass-pressing plate is adopted to act on the straw in the rice carpet to form an ecological carpet, and ecological planting holes used for sowing and ecological fertilization holes used for fertilization are formed in the ecological carpet, so that the ecological carpet is constructed to be an ecological hole carpet; under no-tillage no-irrigation dry direct sowing conditions, sprouted rice seeds are sown in the ecological planting holes, the ecological planting holes are covered, a fertilizer is applied into the ecological fertilization holes, and the ecological fertilization holes are covered; and on the basis of conventional field management, when the rice grows to an early tillering period, young ducks are thrown to prevent and control diseases, pests and weeds, a compound fertilizer is applied in an active tillering period, a compound fertilizer is applied again in a booting stage, and thereforedry direct sowing cultivation for the double-cropping late rice is completed. The method provided by the invention improves a utilization rate of chemical fertilizers, and reduces an amount of waterused in a steeping field and a use amount of pesticides.

Description

technical field [0001] The invention relates to a rice cultivation method, in particular to a dry-seeding cultivation method for double-cropping late rice. Background technique [0002] China's agricultural resource environment is under the dual pressure of exogenous pollution and endogenous pollution, and agriculture has surpassed industry to become China's largest non-point source polluting industry, and the sustainable development of agriculture has encountered a bottleneck. According to statistics, in 2016, China's chemical fertilizer and pesticide usage reached 60 million tons (pure conversion) and 300,000 tons (100 tons), respectively. A series of problems such as loss, waste of resources, environmental pollution, and low product quality. At the same time, China's total agricultural water use is 372 billion m 3 , equivalent to 241.8 billion m of water used for rice production 3 (The total water consumption of rice accounts for about 65% of the total agricultural wat...

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Problems solved by technology

[0004] In order to overcome the problems of difficulty in returning straw to the field, low utilization rate, shortage of water for soaking in the field, large amount of chemical fertilizer, and unreasonable time and amount of topdressing in rice production; seedling emergence rate, the present invention provides a double-season late rice dry direct seeding cultivation method, which can improve the utilization rate of chemical fertilizers, reduce the amount of water used in soaking fields and pesticides, so as to achieve fertilizer saving, water saving, ecology, high yield, and cost reduction the goal of

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