Huayou 2790 is a semi-winter, medium-harvest, male-sterile, "three-line" rapeseed variety selected from the Chinese Academy of Agricultural Sciences. In 2002, it was approved by the Henan Province Variety Approval Committee.
Characteristic characteristics
Huayou 2790 has a total fertility period of 228 days, a plant height of 185 centimeters, a major inflorescence of 66.7 centimeters, a branching area of ​​35 centimeters, and effective branching of 8 to 12 at a time. The number of effective pods per plant is about 460, and the number of fruit per pod is 17-21 tablets, dry weight 3.6-4.1 grams. The main inflorescence has a weak apex at the top, branches are well developed, and flowering and pods are concentrated.
Cultivation points
Appropriate sowing, fine nursery seedbed selection in the soil light and fertile, convenient irrigation and drainage, flat terrain, the former did not grow rapeseed field, fine farming, do a good job of "four ditch" matching, no light dark, when timely enough sowing. The average sowing volume is 7.50-11.25 kg/ha, and the ratio of seedbeds to Daejeon is about 1:5. The general sowing date is around September 15. 1 leaf 1 heart period, remove the nest pile seedlings, 3 leaves when the Dingmiao, uniform Liumiao 100 / square meters, pull out weak seedlings, xenogenic seedlings, deformed seedlings, retain strong seedlings. Before winter, the criteria for strong seedlings were 12 mm stem diameter, 12 green leaf blades, and 39.6 cm opening diameter.
Transplanting in time, rational dense planting and intensive tilling of the field, to achieve a smooth soil, flat, dark and clear, the seedling age is suitable for transplanting 35 to 40 days, the spacing is 15 to 20 cm, spacing is about 40 cm, broadcast The amount is 12 to 150,000 plants/ha. Fields with high levels of fertility can be appropriately reduced in density.
Scientific fertilization holds the principle of balanced fertilization, adequate base fertilizer, skillful application of top dressing, good bud application and application of boron fertilizer. When growing seedlings, high-quality mixed fertilizers such as compound fertilizer, calcium magnesium phosphate fertilizer, potassium chloride, and boron fertilizer are applied at the bottom of the seedbed. After topdressing, topdressing urea 75.0~120.0 kg/ha. After transplanting, the topdressing of urea was 75.0 kg/ha. After 15 days, according to the growing conditions of the seedlings, the application of urea or compound fertilizer was 150.0 kg/ha. After the Spring Festival, the urea fertilizer was 75.0~120.0 kg/ha.
After the emergence of disease and insect pest control, the nursery field should be sprayed with 10% 11 insecticidal WP or cypermethrin 1500-2000 times according to climatic conditions to control aphids, cabbage caterpillars, and yellow-beaked beetles. Daejeon seedling control is the same as nursery seedlings. Before the wintering season in the nursery fields and in Daejeon, it is necessary to do a good job of cleaning and preventing drought, protect the seedlings and prevent diseases. In mid-to-late December, a cultivator is used to cultivate soil to prevent freezing damage.
The rapeseed pods were harvested from green to yellow at the right time, and semi-red and semi-brown were peeled from the middle crops.
Appropriate areas have been planted in winter canola production areas in Sichuan, Guizhou, Hubei, Hunan, Jiangsu, Anhui and Jiangxi for two years. Experiments have shown that the variety has a wide range of adaptability.
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