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Ⅱ优3550是我所选育的晚型杂交稻新组合。该组合于1988—1989年参加本所杂交稻新组合鉴定试验,1989年晚造参加省杂交稻区试均表现高产稳产。其中省区试平均亩产473.8公斤,比对照组合汕优桂44增产6.91%。1989年晚造参加华南四省(区)新组合示范试验,在新兴县示范点种植9.7亩,平均亩产621.5公斤,名列各省(区)所有三系参试组合的榜首,比参试的博优64(7.3亩)的平均亩产546.9公斤亩增74.70公斤,增产13.64%。在本所栽培试验田种植1.08亩,也获得亩产584.50公斤的好收成。(一)特征特性Ⅱ优3550全生育期约130天,株高100厘米左右,株型集散适中,叶片挺直,叶色浓绿,灌浆及后熟期较长,熟色好,耐肥抗倒。该组合
Ⅱ You 3550 is a new type of late hybrid rice we selected. The combination in 1988-1989 to participate in the hybrid identification of new combinations of our test in 1989, the province made the test of hybrid rice provinces showed high and stable yield. Among them, the average output per mu in the provincial trial was 473.8 kg, which was 6.91% higher than the control group Shanyougui 44. In late 1989, he participated in a demonstration experiment of a new combination of four provinces (districts) in southern China, planting 9.7 mu in the demonstration area of Xinxing County with an average yield of 621.5 kilograms per mu, ranking first among all the three-nation test combinations in all provinces (districts) The average yield per mu of Boyou 64 (7.3 mu) was 546. 9 kg, increased by 74.70 kg and increased by 13.64%. 1.08 mu was planted in our experimental field and a good yield of 584.50 kg per mu was also obtained. (A) Characteristics and characteristics Ⅱ You 3550 The whole growth period of about 130 days, plant height of about 100 cm, moderate plant type distribution, leaves upright, dark green leaves, filling and ripening longer, cooked color, resistance to fat inverted. The combination