Characteristics and cultivation key points of Zhendao No. 1, a high-quality medium japonica rice

Zhendao No. 1 (formerly known as 7038), when grown as single-season medium japonica rice in northern Jiangsu, has a whole growth period of 140-145 days. When grown as after-crop rice along the Yangtze River and in southern Jiangsu, the whole growth period is 125-130 days. This variety has a seed-setting rate above 90% and a 1000-grain weight of 25-26 g. When grown as single-season rice, the plant height is 100-105 cm; when grown as after-crop rice, the plant height is 85-90 cm. The head rice rate reaches 70.39%, and the eating quality is good. It is moderately resistant to sheath blight. Cultivation key points: (1) For single-season cultivation, sow in southern Jiangsu in late May. For after-crop rice cultivation along the Yangtze River and in southern Jiangsu, sow from June 20 to 25. (2) The seed rate per mu in the seedling bed should not exceed 30 kg, and the seedling age is best at 30-35 days. For late stubble of after-crop rice, the seedling age should not exceed 40 days. (3) For single-season rice cultivation, transplant 100,000-120,000 basic seedlings per mu. For after-crop rice cultivation, more than 30,000 hills per mu, with 180,000-200,000 seedlings transplanted. (4) For single-season rice cultivation, 12.5 kg of pure nitrogen is needed when the yield per mu is 500 kg. The amount of fertilizer applied in the early stage accounts for about 75% of the total fertilizer amount, and fertilizer application in the middle stage (10-12 leaves) should be controlled. For after-crop rice cultivation, fields with a yield per mu of 400 kg need about 10 kg of pure nitrogen. Apply sufficient basal fertilizer, and apply tillering fertilizer early and heavily. Irrigate frequently with shallow water in the later stage. (5) Do a good job in the prevention and control of diseases, insect pests, and weeds.