超级杂交稻Y两优1号高产栽培技术规程

2008—2009年在陆川县2年4造共示范推广种植超级杂交稻Y两优1号10632．7ha，其表现生育期适中、产量高、米质优、抗逆性强等优点，为探索其高产栽培技术，开展了该品种在陆川县的适宜播期、移栽密度和施肥量试验。结果表明，移栽密度为24．0万穴／ha时产量最高，达7．44t／ha；播期以3月1日播种处理生育期最长，为138d，产量最高，达7．13t／ha；每公顷施纯N210kg时有效穗、每穗实粒数和产量最高，分别为247．5万穗／ha、120．4粒/穗和7．38t／ha。高产栽培技术：适时播种、壮秧剂塑盘培育嫩壮秧、适时，甲抛、科学施肥控水、综合防治病虫害等。

Researches on high-yield cultivation technique for super hybrid rice Y Liangyou 1

The demonstration and extension area of super hybrid rice Y Liangyou 1 reached 10632.7 ha in four crops during two years in Luchuan county in 2008-2009. Its characteristics were showed by proper growing period, high yield, fine grain quality and strong resistance to diseases. The tests for standardizing suitable sowing date, planting density and fertilizer rate have also been carried out to explore high-yielding cultural techniques for super hybrid rice Y Liangyou 1. The yield of rice reached the highest （7.44 t/ha） with 2.4×10^5 hole/ha planting density. The treatment with sowing date on 1^ st March had the longest growth period （138 d） and highest yield （7.13 t/ha）. The effective panicle （2.475×10^6 panicles/ha）, filled grain number per panicle （120.4 grains/panicle） and yield （7.38 t/ha） reached the highest with treatment of N fertilizer @ 210 kg/ha. Its high-yield cultivation techniques include suitable sowing date, plastic plate method of strong seedling （using seedling strengthen agent）, early-throwing, scientific mode of fertilization and proper irrigation, comprehensive prevention and treatment of plant diseases and pests.