Brief introduction of New late Japonica Rice Variety Xiushui 217

Xiushui 217 was approved by the 27th Variety approval meeting of Provincial Agricultural articles Review Committee in March 2003. In the provincial regional test in 2000, the average yield per mu of this variety was 428.63 kg, which was 0.14% lower than that of Xiushui 63 (not significant). In 2001, the average yield per mu was 509.54 kg, which was 11.30% higher than that of Xiushui 63 (very significant level). In two years, the average yield was 5.28% higher than that of Xiushui 63. The average growth period of two years was 136.4 days, which was 2.8 days longer than that of Xiushui 63. In the production test in 2002, the average yield per mu was 433 kg, which was 63% lower than that of the control Xiushui. In the two-year provincial regional test, the average effective panicle per mu was 207000, the number of filled grains per panicle was 90.8, the seed setting rate was 89.9%, and the 1000-grain weight was 28 grams. According to the identification results of the Institute of Plant Protection of Zhejiang Academy of Agricultural Sciences, it is moderately resistant to rice blast, bacterial blight and fine stripe disease, and susceptible to brown planthopper and white-backed planthopper; according to the analysis of the rice and product quality supervision and testing center of the Ministry of Agriculture, the brown rice rate, milled rice rate, head rice rate, grain length, length-width ratio, alkali elimination value, gel consistency and amylose content accord with the first-grade edible high-quality rice standard issued by the ministry, and the chalkiness and transparency meet the second-class edible high-quality rice standard issued by the ministry. The variety had moderate plant type, weak tillering ability, large panicle type, good high yield, moderate growth period, better rice quality and better resistance to rice blast and fine streak disease than Xiushui 63. It is suitable for continuous late cultivation in the whole province.

Key points of cultivation techniques:

1. Sow seeds at the right time and cultivate strong seedlings. The suitable sowing date of continuous cropping late rice is June 25. The amount of seed used in the field is 5 kg per mu and 35 kg per mu in the seedling field. The seedling field should be fertilized with weaning fertilizer and stand-up fertilizer, and the seedling age should not exceed 35 days.

two。 Reasonable close planting. The specification of 5 × 3-4 inch and 3-4 books can be used. It is required to transplant evenly and shallowly, and with the postponement of the transplanting period, the number of basic seedlings should be increased accordingly.

3. Fertilizer and water management. On the basis of sufficient basal fertilizer and early tillering fertilizer, it is suitable to apply panicle fertilizer in order to increase the number of effective panicles and grains per panicle. The total amount of fertilizer used should be controlled at 55-60 piculs of standard fertilizer, and combined application of potash fertilizer is required. Do a good job in protecting seedlings in deep water and promoting tillering in shallow water. After heading, special attention should be paid to the alternation of dry and wet to reduce chaff and increase weight and improve rice quality.

4. Control diseases and insect pests. According to the forecast of diseases and insect pests in local plant protection departments, attention should be paid to the prevention of diseases and insect pests such as stem borer, longitudinal leaf borer, rice lice, sheath blight, rice false smut and so on.