Detailed Explanation of the Characteristics and Cultivation Techniques of the Glutinous Rice Variety Xianghu 25

Xianghu 25 is a medium-maturing late glutinous rice variety bred by the Jiaxing Academy of Agricultural Sciences in Zhejiang Province through composite hybridization of Aigeng 23 / Xianghu 14 ∥ Ce 21 / Aigeng 23. As a single-crop rice, its plant height is about 100 cm. As a second-crop rice, its plant height is 80-85 cm. When grown as single-crop late rice in the suburban counties of Shanghai, it is generally sown in late May, transplanted in late June, and matures in late October. As a second-crop rice, it is sown before June 20 and matures at the end of October to the beginning of November. It is resistant to rice blast and relatively resistant to bacterial leaf blight. The incidence of sheath blight is also lighter than that of the control. The brown rice recovery rate is about 82%, the rice grains have little white belly, and the color is white. Main cultivation techniques: (1) For single-crop rice, the seedling age is about 30 days. The seeding rate per mu of seedling field is about 40 kg, and the ratio of seedling field to main field is 1:8. For second-crop rice, the seedling age is 35-45 days. The seeding rate per mu of seedling field is 40 kg, and the ratio of seedling field to main field is about 1:4.5. (2) For single-crop rice, use a row spacing of 20 cm and a plant spacing of 11.6-13.3 cm; for early planting, small-seedling planting, or high-yield cultivation, use a row spacing of 23.3 cm and a plant spacing of 11.6 cm. For second-crop rice, generally use a row-to-plant spacing of 16.7 x 10 or 13.3 x 11.6 cm. (3) Fertilization should be heavy at the front, light in the middle, and sufficient at the rear. For single-crop rice with a yield of 500 kg per mu, the total fertilizer requirement is about 15 kg of pure nitrogen equivalent. For second-crop rice, the total fertilizer application is generally 10 dan of manure fertilizer and 55 kg of ammonium bicarbonate.