Method for symbiotic rotational culture of rice, crayfishes, ducks and crabs

Abstract

The invention discloses a method for symbiotic rotational culture of rice, crayfishes, ducks and crabs, and relates to the field of agricultural ecological cultivation. The method comprises the following steps: in the middle ten days of January, digging cultivation ditches around a rice field, planting waterweed and typha angustifolia, arranging an anti-escape net around the rice field, placing juvenile crayfishes into the rice field in the first ten days of April, artificially cultivating rice seedlings in a greenhouse in the middle ten days of May, transplanting the seedlings into the rice field, irrigating water into the rice field, adding a nutrient into the water, placing juvenile crabs into the cultivation ditches and the rice field in the middle ten days of July, feeding ducks in abreeding shed in the last ten days of August, arranging fences on the periphery of a rice stubble field in the first ten days of November, and breeding the ducks in the rice field. The ducks, the crayfishes and the crabs are cultured alternately, the utilization rate of the rice field is increased, furthermore, mutual swallowing of the cultured products can be prevented, the rice and the culturedproducts mutually provide nutrients for each other, effective circulation of an ecological system is realized, resources are reasonably utilized, and the culture cost is saved.

Description

[0001] Technical field: [0002] The invention relates to the field of agricultural ecological breeding, in particular to a method for symbiotic rotation cultivation of rice, crayfish, ducks and crabs. [0003] Background technique: [0004] Rice is an annual, gramineous plant, monocotyledonous, warm-loving, about 1 meter high when mature, with slender leaves, about 50 to 100 cm long and 2 to 2.5 cm wide. The flowers of rice are very small. When blooming, the main flowering branches will be arched, and small flowers will bloom between 30 and 50 mm down from the branches. Most of them are self-pollinating and set seeds, which are called rice spikes. Typical rice grains are 5 to 12 mm long and 2 to 3 mm thick. It is an annual grass plant with 24 chromosomes. Rice likes high temperature, high humidity, and short sunshine, and has no strict requirements on soil, and paddy soil is the best. The minimum temperature for seedling germination is 10-12°C, and the optimum temperature i...

AI Technical Summary

Problems solved by technology

[0005] my country's agricultural development has entered the stage of ecological transformation. As the main means to promote agricultural ecological transformation, agriculture is an agricultural method that actively adopts ecologically friendly methods, fully exerts the service functions of agricultural ecosystems, and promotes sustainable agricultural development. Through the ingenious coordination of various interrelationships between rice and animals, the efficient use of light, heat, nutrients and other resources in the rice field ecosystem has realized the model of "one field for two purposes, one field for two harvests, and one action for multiple wins". During the planting period, crayfish, ducks or crabs will be fed in the rice fields, but the feeding form is relatively simple, and only crayfish, crabs or ducks are raised in a rice field, which does not have a high utilization rate of the rice fields and prolongs the production cycle of the aquaculture industry