New Cotton Variety--Nanongzao

Approval No.: National Auditing Cotton and Cotton 2002004 Crop Type: Cotton Variety Name: Nannongzao Selection Unit: Nanjing Agricultural University Variety Source: Sumian No. 6 System Breeding Characteristics: Plant tower type, main stem straight, hairy, The sunny surface was brown, the leaves were nicked, the fruit branches were lifted slightly, and the bell was oval and pointed. The boll weight was 5.2 grams, the clothing weight was 43.3%, the clothing index was 7.3 grams, and the seed was 9.5 grams. Early-maturing varieties, about 136 days of growth period, resistance to wilt disease, resistance to verticillium wilt, fiber quality: 2.5% span length 2.97 mm, specific strength 19.6 cN/tex, micronaire value 4.4. Yield performance: 1999-2000 participated in the wheat cotton intercropping test in the Yellow River valley. The average yields of seed cotton, lint, and pre-frost lint were 175.9 kg, 76.2 kg, and 65.6 kg, respectively. Seed cotton production was reduced by 5.6% from the control cotton variety 19%. Before and after frost, lint yield increased by 4.2% and 3.6% respectively compared to the control variety. In the 2001 production test, the average yields of seed cotton, lint, and pre-frost lint were 191.4 kg, 84.9 kg, and 78.8 kg, respectively, which increased by 5.3% and 14.0, respectively, compared to the control varieties. % and 10.4%. Daejeon produces about 80 kg of lint per mu. Cultivation techniques: (1) Seedlings are planted on April 5-25, transplanted at the end of May and early June; wheat is interplanted with summer and summer, and sown on May 25th. (2) After transplanting wheat with cotton and wheat (oil), the density of mu will be about 3,000. The field with insufficient soil fertility or the delay of transplanting can be increased to 3,500, and 3500-4000 in summer. (3) Field management requires stable and prompt promotion. The base fertilizer shall be applied to the seedbed and the field, and the fertilizer and water management after planting before planting shall be strengthened, the water shall be poured on the live tree, the seedling shall be applied, the cultivator shall be cultivated in time, and the strong seedling shall be promoted as early as possible. Hair; Appropriate early application of flower bell fertilizer, cotton plants in early July into the flowering stage early application, timely reapplied; see the seedlings in early August to apply a peach fertilizer once. (4) Adjust the amount in a timely manner to prevent insect pests in time, protect the boll bells, promote early peach growth, and express bolls early. The national product review meeting approved opinion: After the review, this product meets the national product certification standards, passed the validation. Suitable for cotton planting in the Huaihe River basin.

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