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波阳湖区11个县市,是江西省的重要商品粮基地。近年来,随着早稻杂交水稻大面积的推广种植,生育期短(110天左右),丰产性好的威优64在双杂配套栽培中面积很大。然而在整个湖区,由于栽培水平的差异,产量相差悬殊,高的亩产可达500公斤,低的仅有350公斤左右。为了探讨占整个湖区2/3的中低产稻区用作二晚的威优64高产途径,本文着重对产量构成因素、群体干物质生产以及籽粒灌浆方面进行了研究分析。
Bo Yangyang 11 counties, Jiangxi Province is an important commodity grain base. In recent years, with the large-scale popularization and cultivation of early rice hybrid rice, the short growth period (about 110 days) and the high yield and good wei 64 have a large area in double-hybrid cultivation. However, due to the difference in cultivation levels, the yields of the whole Lake region vary greatly. High yields of up to 500 kg per mu and only 350 kg are low. In order to explore the two-thirds high-yielding and high-yielding ways to produce low-yielding rice in two-thirds of the total area of the lake, the paper focuses on the analysis of yield components, population dry matter production and grain filling.