丘陵双季稻机械化生产高产栽培技术研究

Study on high-yield cultivation technique of double cropping rice mechanization production in hilly area

研究旨在探索机械化生产条件下的丘陵双季稻区水稻高产栽培技术。以10个早、晚稻品种为材料,设置高(H)、中(M)、低(L)3个施肥水平,比较分析不同处理条件下的秧苗素质、茎蘖动态、干物质量、产量和产量结构。研究结果表明:产量较高的水稻品种其秧苗素质较高,各处理茎蘖数的动态变化均呈单峰曲线,茎蘖数、叶和茎的干物质量随施肥量的增加而增大,穗的干物质量、收获指数和产量均以M施肥水平的最大,其产量比H和L施肥水平分别平均增产446.74 kg/hm2和872.16 kg/hm2,增幅分别为6.79%和14.18%。

The primary objective of this study was to explore high-yield cultivation techniques of rice at mechanization production condition in south hilly area.Field experiments were conducted in Jiangxi province in 2011,involving ten rice cultivars,three fertilizer application rates.The seedling quality,tiller dynamic,dry matter amount,grain yield and grain yield structure in various treatments were comparative analyzed.The results indicated that the higher yield of rice cultivars,the better of its seedling quality.The dynamics of tillers showed a single peak curve,the tillers,dry matter amount of leaf and stem increased with increasing fertilizer application amount.The dry matter amount of panicle,harvest index and grain yield of M fertilizer application rate was the highest.The grain yield average increased 446.74 kg/hm2 and 872.16 kg/hm2,and average increase yield rate by 6.79% and 14.18% on M fertilizer application rate more than H and L fertilizer application rate,respectively.