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上海郊区近二年来引进一批杂交水稻,试种结果,适合当前示范推广的主要组合有: 一、二九南1号A×国际24 现命名为南优2号,属弱度感光型的中熟晚秈,全生育期135—140天,株高100—110厘米。根系发达,分蘗力强,茎杆粗壮,抗倒力强,叶指甲型,深缘直立,较肥厚。叶下禾,穗大粒多,属大穗型,一般每穗150—200粒,千粒重26—27克左右。谷尖紫色,部份具短芒。米质较好,一般糙米率78％左右,蛋白质含量8.4％左右。该品种株型略松散,抗稻瘟病,但较(?)感染纹枯病和白叶枯病。作单季晚稻宜在6月初播种,7月初移栽,一般大面积栽培亩产1000—1200斤以
Shanghai suburbs in the past two years to introduce a number of hybrid rice, test results, suitable for the current demonstration and promotion of the main combinations are: one, two nine South No. 1 A × International 24 now named Nam You 2, is a weak light-sensitive type Late indica indica, the whole growth period of 135-140 days, plant height of 100-110 cm. Developed roots, strong tillers, stalks sturdy, strong anti-lodging, leaf nails, deep erect, more hypertrophy. Leaves under the Wo, spike large grain, is a large panicle, usually 150-200 grains per spike, grain weight 26-27 grams. Valley tip purple, part of a short mans. Good quality rice, brown rice rate of about 78%, the protein content of about 8.4%. The variety slightly loose plant type, resistant to blast, but more than (?) Infected sheath blight and bacterial leaf blight. For single-season late rice should be planted in early June, transplanted in early July, generally large-area cultivation of 1000-1200 kg per mu