Rice planting method for shrimp and rice symbiosis field

Abstract

The invention belongs to the technical field of rice and shrimp planting and breeding, and discloses a rice planting method for a shrimp and rice symbiosis field. A new rice variety 'giant rice' moresuitable for cultivation in the shrimp and rice field is selected, seeding is performed in mid-to-late May, transplantation is performed at the end of June, shrimps and rice are harvested in the lastten-day of September, seedlings are transplanted to 60-75 hundred holes per hm<2>, and the transplanting seedling number of unit area is 1 / 3 of the practical level of large area at present. An irrigation layer at a reviving tillering stage is 10cm-20cm, the field can be exposed for 3-5 days after reaching preset total number of seedlings, a deep irrigation layer at an effective tillering termination stage, a jointing-booting stage and a filling and ripening stage is 40cm-50cm, and the depth of the irrigation layer of the shrimp and rice field is increased by 20cm-30cm at middle and later stages of rice growth. Weeds are pressed by the seedlings, chemical weeding is omitted, topdressing is performed in a low-intensity and high-frequency manner, and nitrogen fertilizers, tillering fertilizers and ear granule fertilizers are applied for 2-3 times according to field seedling condition quantity demanded. Mutualistic symbiosis of the rice and the shrimps is realized, and yield, quality and benefits are synchronously improved.

Description

technical field [0001] The invention belongs to the technical field of rice and shrimp breeding, and in particular relates to a rice planting method in a shrimp-rice symbiosis field. Background technique [0002] At present, the commonly used existing technology in the industry is as follows: the rice and shrimp breeding mode has become an important agricultural industry with large scale and high efficiency in the rice area of ​​the Yangtze River Basin. According to statistics, in 2016, the area of ​​the rice and shrimp breeding industry in China was more than 9 million mu, of which Hubei Province reached 4.87 million mu, accounting for 54% of the country; The Three-Year Development Plan states that by 2020, the province's shrimp and rice co-cultivation area will grow from the current 5.61 million mu to 7 million mu. At the beginning of 2018, Jingmen City's comprehensive paddy field cultivation area dominated by rice and shrimp reached more than 700,000 mu, accounting for n...

AI Technical Summary

Problems solved by technology

However, because "shrimp is expensive and rice is cheap" in comparison, it is common for rice and shrimp farmers to "heavy shrimp and despise rice, and discard rice when raising shrimp". In addition, the rice varieties currently planted in rice and shrimp fields have low yield and production efficiency. , and it cannot create a "shady" growth environment for crayfish, rice and shrimp have not really formed a high degree of ecological symbiosis and mutually beneficial integration

[0003] To sum up, the problems existing in the existing technology are: the yield and production efficiency of the rice varieties planted in the rice and shrimp fields are not high; Ecological symbiosis and mutually beneficial integration

[0007] Rice cultivation techniques in rice and shrimp fields are not perfect, and some management measures are not conducive to the growth and life of crayfish. "Giant rice" and its supporting cultivation techniques can truly achieve a high degree of ecological symbiosis and mutual beneficial integration of rice and shrimp

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