Research on High Yield Cultivation Techniques of Rice in the Fuliang Mountain Area
Rice yields in mountainous areas are 750-1,500 kg·hm-2 lower than those in plain areas,mainly due to the block-age of mountains,the reduction of sunshine,the lowering of ground temperature,and the decrease in fertilizer utilization effi-ciency.To improve the rice yield in mountainous areas,we started by improving ground temperature and fertilizer utilization efficiency of paddy fields,scientifically transporting nitrogen fertilizer,and adopting thin dew irrigation technology.The re-sults showed that compared with farmers'traditional cultivation methods,the number of effective panicles increased by 0.3-0.7,the number of solid grains per spike increased by 1-8,the thousand-grain weight of rice increased by 0-4 g,the agro-nomical efficiency of fertilizers increased by 6.57%-10.16%,and the yield increased by 3.01%-9.34%.For paddy fields in mountainous areas,the best nitrogen fertilizer management is based on 3:4:3 base fertilizer,tiller fertilizer,and spike fertilizer,which can improve the contribution of fertilizer yield,enhance the agronomic efficiency of fertilizer,increase the yield of rice,and improve the economic benefits.This study provides a reference for rice cultivation in mountainous areas.
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