Ⅱ You 30

Breeding unit: Jiangsu Hongqi Seed Industry Co., Ltd.

 

Variety type: Indica three-line hybrid rice

 

Approval number: Wandao 2010013

 

Characteristics: The results of the two-year regional test in 2007 and 2008 show that the plant height is about 125 cm, the effective ear per mu is about 160,000, the total number of ears is about 182, the seed setting rate is about 86%, the thousand-grain weight is about 28 grams, and the whole growth period About 138 days.

 

Resistance performance: According to the resistance identification of the Institute of Plant Protection, Anhui Academy of Agricultural Sciences, it is moderately resistant to bacterial blight, moderately resistant to rice blast, and moderately resistant to rice blast.

 

Quality performance: The rice quality is up to level 3 of the Ministry of Agriculture's Rice and Products Quality Supervision, Inspection and Testing Center.

 

Yield performance: under general cultivation conditions, the average yield per mu in the two-year regional trial was 635 kg, which was an increase of 6.41% over the control variety; the production test yielded 623 kg per mu, which was 8.82% more than the control variety.

 

Suitable area for promotion: the whole province of Anhui.

 

Key points of cultivation techniques:

 

1. Sowing seeds at the right time to cultivate multi-tiller and strong seedlings

 

Ⅱ You 30 belongs to the middle-maturing medium indica type. It is sown in late April and early May. The seedling amount per mu of seedling field is 12-15 kg for water-raising seedlings, 20 kg for dry-raising seedlings, and 1-1.5 kg per mu of field seedlings. Winter ploughing and freezing of pond fields, finishing seedling fields, applying sufficient base fertilizer, timely application of weaning fertilizer and long coarse fertilizer, strengthening water slurry management and pest control, improving the quality of seedlings, and cultivating suitable age and strong tiller seedlings.

 

2. Transplant at appropriate age and plant closely

 

Ⅱ You 30 has good lushness, strong tiller, reasonable dense planting, and control of basic seedlings in the field. Generally transplanted from late May to early mid-June, seedling age is 30-35 days, planting 16,000-18,000 holes per mu, spacing 13cm×(27-30) cm, 1-2 seedlings per hole, 6 basic seedlings per mu -80000. Plant evenly and shallowly in thin water.

 

3. Scientific fertilization and water management to cultivate high-yield groups

 

Under the condition of medium soil fertility of Ⅱ You 30, apply 15-17 kg of pure nitrogen per mu. It is appropriate to master the ratio of base fertilizer, tiller fertilizer and booting fertilizer to 4:3:3. Fertilizer management grasps the principles of heavy front, central control, and stable back. Apply enough base fertilizer, increase the application of organic fertilizer and phosphorus and potassium fertilizer; apply early tiller fertilizer; focus on promoting ear fertilizer to promote combination, and appropriate grain fertilizer after full ear. Water slurry management masters the principles of shallow water transplanting, thin water tillering, 80% ear count seedlings resting in the field, peak per mu of no more than 250,000, deep water earing of poplar flowers, and late shallow wet alternate principles. Water is cut off 5-7 days before harvest.

 

4. Prevention and control of pests and diseases

 

Pay attention to the prevention and control of black-streaked dwarf disease, rice blast, sheath blight, stem borers, rice planthoppers, rice leaf rollers and other pests and weeds to ensure the normal growth of seedlings.