A New Indica Rice Variety "Hongliangyou 166"

The comprehensive performance of the main indicators of characteristic quality: head rice rate 66.5%, aspect ratio 2.6, chalky grain rate 36%, chalkiness 6.4%, gel consistency 78 mm, amylose content 23.4%. Resistance performance: the weighted average grade of resistance to rice blast was 5.7, the resistance frequency was 90%, and the resistance to bacterial blight was 5. The average growth period of one-cropping medium rice in the middle and lower reaches of the Yangtze River is 137.3 days, which is 2.8 days later than that of the control "Shanyou 63". The seedling stage has strong tillers, luxuriant growth, moderate stalk, straight flag leaves, plant height of about 120 cm, about 9 ears per plant, about 165 grains per panicle, seed setting rate of about 85%, 1000-grain weight of about 28 grams, and better rice quality.

Cultivation techniques sparse sowing seedlings, suitable age transplanting: according to the local medium indica production season timely early sowing, 10: 12 kg per mu of seedling field, seedling age about 30 days. The middle and upper fertility fields were planted with 1.5 ~ 18000 holes per mu, with 1 ~ 2 grain seedlings per mu, and the basic seedlings were controlled at about 50 000 seedlings per mu, while those with fertility deviation were planted with 18 ~ 20 000 holes per mu and 70 ~ 80 000 basic seedlings per mu. Rational fertilization and scientific management: generally apply 15 kg of pure nitrogen per mu, using the method of "promoting, controlling and replenishing", applying sufficient base fertilizer, early tillering fertilizer and increasing application.

Phosphorus and potassium fertilizer, control the application of nitrogen fertilizer in the middle stage, and apply appropriate amount of panicle fertilizer in the later stage, mainly to protect flower fertilizer. In the early stage of water management, shallow water irrigation promotes early development, and after enough seedlings, the field should be placed as early as possible to control growth, and it should be put off in stages; timely irrigation in the middle stage of panicle differentiation, dry and wet in the later stage, and stop irrigation about a week before harvest. Pest control: pay attention to timely control of rice blast, rice thrips, rice planthopper, Chilo suppressalis, rice leaf roller and other diseases and insect pests.

The suitable area is suitable for planting in the middle and lower reaches of the Yangtze River.