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以武运粳24号和南粳44为材料,对钵苗机栽、精确点抛和毯苗机插3种栽培方式水稻的产量、干物质积累、茎蘖动态、LAI等进行比较研究。结果表明,不同栽培方式间水稻产量存在显著差异,钵苗机栽、精确点抛产量极显著高于毯苗机插,钵苗机栽显著高于精确点抛,产量差异主要来源于每穗粒数;物质生产上,移栽至N-n期钵苗机栽和精确点抛物质积累量多于毯苗机插,无效分蘖期毯苗机插物质积累量较多,至拔节期不同栽培方式干物质量相当,拔节至抽穗期、抽穗至成熟期钵苗机栽、精确点抛水稻物质积累量极显著高于毯苗机插,钵苗机栽显著高于精确点抛。说明与毯苗机插相比,钵苗机栽、精确点抛水稻全生育期干物质积累(除无效分蘖期)都具有一定优势,特别是生育中、后期光合能力强,物质积累多,LAI较大,叶片不早衰,结实率和千粒重较高,且钵苗机栽优于精确点抛。
Taking Wuyunjing 24 and Nanjing 44 as materials, the yield, dry matter accumulation, stem-tiller dynamics and LAI of paddy seedlings planting, precise point throwing and blanket planting were compared. The results showed that there was a significant difference in the yield of rice between different cultivation methods. The yield of the seedling planted with the seedling and the seedling was significantly higher than that of the blanket seedling planting machine. In terms of material production, the accumulative amount of precise point-parabola accumulation in the seedling transplanting to the Nn period was more than that in the blanket seedling intercropping. The results showed that the accumulation of rice grain at the precise point was significantly higher than that of the blanket seedling planting machine. The results showed that compared with the blanket machine insertion, the seedlings planted with rice seedling machine had the advantage of accumulating dry matter (excluding the invalid tillering stage) during the whole growth period, especially the photosynthetic ability and accumulation of materials during the middle and late growth period. LAI Larger, the leaves are not premature, seed setting rate and grain weight is higher, and the seedling machine planted better than the precise point throwing.