Brief introduction of Rice varieties Huayou 838

Characteristics: the whole growth period was 122-125 days early, 118-120 days late, and plant height 107~122cm. Strong tillering ability, compact plant type, neat heading, green leaf color and good ripe color. The effective panicle per mu is 18 ~ 210000, the total grain per panicle is about 135grains, the seed setting rate is about 85%, and the 1000-grain weight is 25,27g. Brown rice rate 78.2%, milled rice rate 70.4%, head rice rate 50.4%, grain length 6.0mm, aspect ratio 2.6, chalkiness 49%, chalkiness 4.2, transparency 1, gelatinization temperature 5.5, gel consistency 49mm, amylose 20.6%, protein 7.8%. The rice quality bityou combination was obviously improved, and the field planting showed high resistance to rice blast.

Key points of cultivation techniques: early sowing and early insertion of ① at the right time. Early planting was sown in early March, seedling age was 5-5.5 leaves, late planting was sown in early July, and seedling age was 20-25 days. ② reasonable close planting. Insert size 7 × 3 (inch) or 7 × 4 (inch), double plant. ③ applied sufficient base fertilizer, early topdressing, early field cultivation. Rational formula fertilization, increased application of phosphorus and potassium fertilizer, controlled application of nitrogen fertilizer in the middle stage, and skillful application of strong tail fertilizer in the later stage.