Rice and cray continuous cropping and joint cropping pollution-free ecological breeding method

Abstract

The invention provides a rice and cray continuous cropping and joint cropping pollution-free ecological breeding method which comprises the following steps: (1) arranging rice planting regions and field ditches in a staggered manner in a rice field, and arranging ridges therebetween; (2) fall-plough in the rice planting regions: scattering milk vetch; (3) putting cray offspring seedlings in the ditches in the last ten-day of March, and heightening the water level, wherein the cray offspring seedlings enter the rice planting regions to eat milk vetch; and reducing the water level in the last ten days of May, fishing the crays; (4) preparing soil and transplanting seedlings in the first ten days of June, and putting the cray offspring seedlings in the ditches; and flooding the rice in the last ten days of June, reducing the water level after flooding, and digging a plurality of channels in the strip-type ridges; and keeping the water levels in the rice planting regions at 3-5cm; and (5)reducing the water levels of the rice planting regions in the last ten days of September; and transferring the crays to the ditches, and after harvesting rice, fishing the crays. The method provided by the invention, no chemical fertilizers and pesticides are needed, continuous cropping and joint cropping are combined, and crays and rice which are green, pollution-free and excellent in quality canbe obtained, and the economical benefit is improved greatly.

Description

technical field [0001] The invention relates to the field of paddy field culture of crayfish, in particular to a pollution-free ecological culture method for continuous cropping of rice and shrimp. Background technique [0002] Procambarus clarkii belongs to Arthrophyta, Crustacea, Crawfishidae, Procambarus genus, also known as crayfish, scientific name Procambarus clarkii (hereinafter collectively referred to as crayfish), its delicious meat, rich nutrition, popular among people Love is the main species of shrimp farming at present. In recent years, due to the sharp increase in market demand, the natural resources of crayfish have decreased sharply, and the price has gradually increased. Therefore, artificial scientific breeding is used to meet market demand. Ecological planting and breeding is an inevitable trend in the development of agricultural industrialization. Its characteristics are based on the principle of symbiosis and complementarity between planting and breedi...

AI Technical Summary

Problems solved by technology

[0003] As a way of ecological planting and breeding, crayfish rice field farming has developed rapidly. Due to the unique biological characteristics of crayfish’s survival and growth, the unit yield of crayfish in rice field farming is generally not high, which is far from meeting the needs of market consumers for high-quality commercial shrimp.