Detailed Introduction to the Dan Nuo No. 2 Rice Variety

Dan Nuo No. 2 rice is a new glutinous rice line developed by the Rice Experiment Station of the Dandong Academy of Agricultural Sciences, using Fan 4 as the female parent and Liaoyannuo No. 4 as the male parent through artificial sexual hybridization and years of systematic selection. It was approved and named by the Liaoning Provincial Crop Variety Approval Committee in 2001. Characteristics: seedlings have a well-developed root system and strong tillering ability; plant height is 100 cm; the main stem has 16 leaves; leaves are clean and upright. The plant is compact, with thick and sturdy stems and resistance to lodging, and matures with green stalks; panicle length is 15 cm-16 cm; panicles are erect; each panicle has 100-110 filled grains; seed-setting rate is 85%; 1000-grain weight is 25 g; awnless. The growth period is 162 days, belonging to a late-maturing variety. Cultivation points: sow at the right time and cultivate strong seedlings. In Dandong and Dalian areas, sowing in mid-April is appropriate; for ordinary seedling raising, the sowing rate is about 200 g per sq m; for plastic soft-tray seedling raising and manual transplanting, the sowing rate is 60 g-70 g per tray. To cultivate strong seedlings with tillers, apply weaning fertilizer at the 1-leaf-1-heart stage. Transplant in time and transplant sparsely and reasonably. Transplanting can be done when the seedling age is 35-40 days, with row spacing and plant spacing of 33 cm x 14 cm, or 30 cm x 18 cm. Manage water scientifically and fertilize reasonably. Adopt a water management method combining shallow, wet and dry conditions, mainly shallow water; at the early jointing stage, water can be drained to air the field or dry the field. For fields with average fertility, apply 45 kg of ammonium sulfate, 7.5 kg of diammonium phosphate per mu; phosphate fertilizer is applied once as a basal application, and nitrogen fertilizer is applied in three stages in 5 applications. Avoid excessive or late final fertilization, so as to prevent delayed maturity with excessive vegetative growth and the occurrence of pests and diseases. Prevent and control pests and diseases to ensure a bumper harvest. This variety is resistant to rice sheath blight, bacterial leaf blight and rice blast, and moderately resistant to rice false smut. In fields with severe rice blast, spray a mixed solution of tricyclazole and jinggangmycin once each at the tillering stage and the breaking stage. In fields with severe bacterial leaf blight, strengthen control with Yeqingshuang. For rice false smut control, Daofengling can be used. In addition, control of the striped stem borer, rice water weevil and rice leaf roller should be strengthened. Suitable areas: suitable for planting in southern Liaoning, central Hebei, northern Shanxi, western Shaanxi and central **, as well as areas where Zhongdan No. 2, Jingyue No. 1 and Danjing No. 4 are planted.