Shaoxian No. 1 (Rice)

Shaoxian No. 1 (original name Shaoxian 93-9) is a new indica rice variety bred by crossing Yuenuo No. 1 with Lunhui 422 and backcrossing Yuenuo No. 1 in Shaoxing City, Zhejiang Province.

Shaoxian No. 1 is suitable for light cultivation in Zhejiang Province, such as early and late season direct seeding or seedling throwing. Tillering medium, plant compact, strong cold tolerance, especially during heading and flowering period can resist the adverse climate factors, fertilizer resistance, large panicle grain, about 100~110 grains per panicle, 85~90 full grains, seed setting rate of about 85%, 1000-bit weight of about 22g, flag leaves wider, more upright, late green straw yellow maturity. According to plant protection institute of Zhejiang Province Academy of Agricultural Sciences, the average disease grade of panicle neck blast is 1.7, the highest disease grade is 5.0, the resistance is better than Jiayu 293, belonging to medium resistance to rice blast, the quality is medium and excellent, the rate of rough rice and head rice is relatively high. According to the determination of glutenization system of China Rice Institute, the brown rice rate is 81.3%, the rate of head rice is 73.3%, the chalkiness is 8.1%, the transparency is 3, the gelatinization temperature (alkali value) is 5.5, the gel consistency is 4mm, the amylose content is 23.5%, and the comprehensive score of rice quality is 50 points, which is obviously better than that of Zhejiang 852(34 points).

The average yield per mu was 466.53 kg and 401.5 kg respectively in the regional test of early rice in Shaoxing City, Zhejiang Province, which increased by 9.51% and 1.85% respectively compared with the check variety Zhe 852. The average yield per mu was 424.08 kg in the early rice productivity test in Shaoxing City, Zhejiang Province in 1996, which increased by 7.9% compared with the check variety Zhe 852. In Zhuji City, more than 1000 mu was demonstrated in 1996, with an average yield of 420~450kg per mu. From 1995 to 1999, the demonstration of light cultivation in counties (cities) of Shaoxing City was outstanding, with a yield of more than 400kg per mu and a yield of more than 550kg per mu in high-yield fields.

Cultivated by Zhejiang Province Shaoxing City Institute of Agricultural Sciences

Areas and techniques suitable for sowing, cultivation of strong seedlings, green manure fields (including winter fallow fields) throwing seedlings: suitable for sowing at the end of March and early April, early rape, barley field in April 20 or so sowing. The sowing amount per mu is 150 Kg, the seed amount for field is 5kg, the seedling age is 20~25 days, and the leaf age is 4.0~4.5 leaves. Reasonable close planting, throw good throw foot drop field seedlings. 70 trays per mu and 120,000 seedlings per mu were suitable for seedling throwing density. Direct seeding: suitable sowing time is April 10~20, seed quantity is 4.5~ 5.0 kg per mu, after germination, direct seeding is carried out. To strengthen fertilizer and water management, the total amount of fertilizer applied in direct seeding field should not exceed 2000kg/mu, and on the basis of certain basal fertilizer, about 5kg weaning fertilizer urea should be applied per mu when seedlings have 1.5~2.0 leaves. Heavy fertilizer was applied at the 5-leaf stage, urea 10.0 ~ 12.5 kg/mu, phosphorus 20kg/mu and potassium 7.5 kg/mu. Fertilization in throwing seedling field is the same as direct seeding, the emphasis of fertilization is on the early stage, and the total fertilization is controlled within 2000kg/mu. When the effective seedlings of direct seeding or throwing seedling field reach 280,000 ~ 300,000 per mu, it is necessary to put the field in time and put it again to prevent the population from being too large and improve the tillering rate. Run irrigation water later, keep the soil moist in the field, cut off water too early. Strengthen pest and weed control. Shaoxian No. 1 is green quickly after throwing, tillering early, field growth is green all the way, easy to cause rice sheath blight, stem borer and other diseases and insect pests, so it is necessary to do a good job of pest control in time. 1~2 herbicides were selected according to grass condition in direct seeding field.