New cotton strain zgk9822

ZGK9822 (formerly known as Zhong221) is a new strain of disease-resistant and insect-resistant cotton bred by Cotton Research Institute of Chinese Academy of Agricultural Sciences. It contains two insect-resistant genes, BT and cpTI. The strain has passed the genetic safety evaluation of the Ministry of Agriculture.

1. Characteristics: the growth period is 130 days, which belongs to the type of mid-mature and slightly early variety. The plant is tower-shaped, compact, 82 cm high, moderate leaf size, dark green leaves, strong boll setting, stout stem resistant to lodging. The bell is oval, the boll weight is 5.6 grams, the lint percentage is 39%, the bell shell is thin, the catkins are smooth and the leaves are collected, it is easy to pick, and the lint color is white. The cashmere length is 30.1 mm and the micronaire value is 4.8. The quality index meets the requirements of high quality cotton. Strong resistance and wide adaptability. It has strong disease resistance and belongs to Fusarium wilt resistance and Verticillium wilt resistance. Saline-alkali resistance, strong early tolerance, good leaf function in the later stage. It is highly resistant to cotton bollworm, and the insect resistance is stable. It is suitable to popularize trial planting in the Huang-Huai River Basin and other suitable areas.

Second, yield table: in the 1998 Murray 1999 grade comparison test, the average pre-frost lint yield of 1x15 ha (1 mu) was 102.6 kg, which was 18.1% higher than that of the control Zhongmiansuo 19. In 2001, in the wheat interplanting regional trial in the Yellow River basin, the average prefrost lint yield was 85.1kg, 12.8% higher than that of the control Zhongmiansuo 19. In 2001, he participated in the national genetically modified variety production experiment. The yield of lint before frost was 95.8kg per hectare, which was 16.4% higher than that of Xinmian 33B and 8.1% higher than that of 99B. In 2002, it was demonstrated and planted in Shandong Xiajin Golden Autumn seed Industry breeding Base (contact telephone: 0534UV 3269172), and the lint yield of 15 ha was 124.1 kg.

Third, the main points of cultivation: ① sowing at the right time, reasonable close planting. Plastic film cotton, after Grain Rain (April 20-25) is the suitable sowing time, sowing should not be too early. Planting density, cotton field with high fertilizer and water, 5000 plants in 15 hectares, 5000 plants in general cotton field, 4000 plants in general cotton field. ② uses plant growth regulators flexibly. According to the principle of "looking at the sky, the earth and the seedlings", we should take "cotton plants grow strong, build high-yield shelves steadily, and set up more bolls" as the goal of chemical adjustment, and master the use of regulators in different times, in small amounts, scientifically and flexibly, and avoid overadjusting and affecting normal growth. ③ controls diseases and insect pests. Except for the outbreak year, the second generation cotton bollworm generally does not need to be controlled, while the third and fourth generation cotton bollworm should be controlled according to the population density, and the control index is 10 Murray and 15 larvae per hundred plants. Cotton aphid, red spider, blind Toona sinensis and other pests should be controlled in time, and the comprehensive measures of "prevention, nutrition, treatment and rehabilitation" should be taken to control Fusarium wilt and Verticillium wilt. ④ pruning in time. This variety has rapid growth and development in the early stage and low bud node position, which requires timely and thorough pruning of the lower part. Early hair cotton, in order to prevent premature senescence, we can take the method of picking early buds or going to the lower part 1 Murray 2 fruit branches. This variety of ⑤ is sensitive to fertilizer and water, so fertilizer and water management should be strengthened timely and scientifically.