遗传工程稻1号高产栽培优化方案的研究

A STUDY ON OPTIMAL PROGRAM FOR HIGH-YIELDING CUL TIVATION OF GER-1

对遗传工程稻１号进行了播期、播量、秧龄、密度及施氮量的五水平正交旋转组合设计试验，建立了平均每公顷产９０００ｋｇ以上的综合农艺数学模型及其优化方案５５７套，其９５％置信度的秧田播种量为１５０～１６０．５ｋｇ／ｈｍ２，秧龄为３９．４～４０．８ｄ，播种期为４月２１日至２３日，每公顷栽２５．３５～２７万穴，本田每公顷施氮１１３．８５～１２２．１ｋｇ．此方案经１９９４年８个示范点验证，每公顷产量为８８８６～９２０２．５ｋｇ，比对照增产６．９％～１８．１％，证明此方案可行．

For high-yielding cultivation of GER-1 ,five critical cultural factors were cho-sen to establish an optimal program with quintuple-variate quadrate orthogonal-gyrating re-gression design in Anhui during 1993 to 1994. The results obtained are follows :The grain output pre area of 557 selected plans is over 9 000 kg/hm2. To confidence limit at 95%level of selected plans, sowing seed quantity, seedling age, sowing time, transplant density and amount of N-fertilizer applied are respectively l50～160.5kg/hm2,39.4～ 40.8days,12～23 April,253 500 ～ 270 000 bunch/hm2 and 113.85～122.1kg/hm2. Production experiment prove that,by used of the optimal program,the practical grain output of GER-1 are 8 886 ～9202.5kg/hm2 which is 6.9%to 18.1%higher than that of CK.