Improved cotton variety Ruiza 816

Characteristics: the first generation of mid-mature hybrid varieties transformed with insect-resistant genes, the growth period of spring sowing in the Yellow River basin is 120 days, good emergence, strong growth in the early and middle stages, general growth in the later stage, and good uniformity. The plant shape is loose, the plant height is 100 cm, the stem is purplish red, the fruit branch is long, the hairs are few, the leaf is large and green, the node of the first fruit branch is 7.1 nodes; there are 15.8 bolls per plant, the bolls are oval, the bolls are smooth, the single boll weight is 6.6 grams, the lint percentage is 39.8%, the seed finger is 11.8 grams, and the flowering rate before frost is 94.1%. Resistance to Fusarium wilt, Verticillium wilt, cotton bollworm; average length of the upper half of HVICC fiber is 30.3mm, breaking specific strength is 30.9 N / Tex, micronaire value is 4.9, breaking elongation is 6.7%, reflectivity is 73.9%, yellow depth is 8.1, evenness index is 85.3%, spinning evenness index is 150.

The main points of cultivation techniques are as follows: (1) sowing in the cotton area of the Yellow River basin from April 10 to 20, plastic film mulching cultivation or seedling transplanting with watermelon, garlic, @ # @ 245 crops and other crops interplanting. (2) the density of seedlings per mu is 3000 in general plots. (3) applying sufficient base fertilizer, increasing phosphorus and potassium fertilizer, early heavy application of flower and boll fertilizer, timely spraying nitrogen, phosphorus and potassium compound fertilizer, and foliar fertilizer in the later stage. (4) the principle of early application, multiple times and appropriate amount should be mastered in the chemical control of pyrethromycin. (5) the second generation cotton bollworm does not need to be controlled in general years, the third and fourth generation cotton bollworm eggs should be controlled in time during the peak incubation period, and attention should be paid to the control of cotton aphid, red spider, bug bug and other non-Lepidoptera pests during the whole growth period.

Approval opinion: this variety has obtained the safety certificate for production and application of agricultural genetically modified organisms (the name of genetically modified organisms is sGKz20 (Ruiza 816)), which meets the national cotton variety approval standard and has been approved. It is a mid-mature hybrid variety with insect resistance gene, which is suitable for spring sowing in the cotton areas of central and southern Hebei, Shandong, eastern, northern and central Henan, north of Huaihe River in Jiangsu and Anhui, Tianjin, southern Shanxi and Guanzhong of Shaanxi Province. it should be promoted strictly in accordance with the scope allowed by the safety certificate of agricultural genetically modified organisms.