| Rice-crayfish farming is a farming technique,which is ecological benefit and common habitat of animals and plants.Ourcountry has vast paddy area,rich water resources and huge development potential crawfish rice farming.Some studies have shown that shrimp paddy help farmers increase production,improve product quality,but also in line with the development of ecological agriculture,because paddy shrimp mode takes full advantage of the water resources,Procambarus clarkii can prey on rice pests,help paddy cultivation,running water,their droppings and bait can become rice organic fertilizer,rice fertilizer instead of the process to ensure the safety and quality of rice.Rice played purifying water quality,provide good habitat for the Procambarus clarkii achieve rice shrimp mutualism.This study analyzed the differences under different growing conditions and non-paddy rice cultivation ambient temperature and lighting effects and crawfish farming,the impact of planting rice for crawfish farming environment and to verify the physical factors mutualism of paddy shrimp;Further comparison between different planting densities of different rice ambient temperature and light and crayfish survival,exploring the most suitable for the survival of crayfish rice planting density;In production test,comparative analysis of hybrid rice farming crawfish and high bar crawfish ponds in rice and local rice and a single shrimp single production situation,the following conclusions:1)The water temperature is recorded and no rice paddy pond pools,mud moderate light intensity,were compared and the mean difference analysis found that in rice pond the average water temperature is 33.2℃,and average mud temperature is 32.5℃.They are both significantly lower than non-rice pool’s 34.6℃ and 34.2℃;the harvest of crayfish weighing counts 414g,more than 316g in the poor without rice,and we found that the number of rice pool crawfish survival is 17.8 which is more than 11 without rice yields pool.2)The water temperature,mud temperature and light intensity of different density rice pool were recorded.We found that there is no significantly difference between the effects on the temperature and light intensity and other physical factors of different density rice pool.The average size of crayfish cultured in low-density rice pool reached a maximum of 31/kg,the average biomass of the entire pool 1021g,two values are highest in the experimental groups.3)Hybrid rice paddy and high bar pool yield rice and crawfish yield than local single monoculture rice and crawfish production is low,compared to paddy environment,hybrid rice paddy farming crawfishharvest quantity,and tall rice harvest crawfish pond size larger.Studying the environmental impact of rice cultivation in temperature and light and the effect on survival of crayfish found in rice has improved the environment in the process of crawfish farming,shade cooling effect,low-density rice cultivation for crawfish farming environment optimization the most obvious effect;hybrid rice production test results showed that hybrid rice breeding environment crawfish yield,high pole rice farming environment crawfish size larger.This analysis of the advantages of shrimp pattern paddy rice fields and further promote the role of shrimp play theoretical support,with some reference value. |
