Three High Soybean Variety Liaodou 22

Liaodou 22 was bred by the crop Research Institute of Liaoning Academy of Agricultural Sciences as early as 1995, using Liao 8878-13-9-9 as female parent and 93010-9 as male parent by means of sexual hybridization and pedigree selection. the new soybean variety "three high" (high yield, high oil and high protein), which has been bred for 11 years, has been approved by the National crop Variety approval Committee in 2006.

1. Characteristic characteristic

The root system is developed, the stem is strong, the leaf color is dark green, the leaf is oval, the main stem is 17.7 nodes, there are 1.8 effective branches, the plant type converges, and the plant height is 96.8 cm. Purple flowers, sub-limited pod habit, 42.1 effective pods per plant; uniform distribution, mature pods light brown, not easy to crack pods. There are 2-3 grains per pod, and the seeds are oval and glossy. The seed coat and hilum are yellow and the weight of 100 seeds is 21.4 grams. The complete grain rate is 90.55%, the insect-eating grain rate is 3.75%, the sum of brown spot grain rate and purple spot grain rate is 4.10%, and the sum of immature grain rate and impurity rate is 1.60%. According to the grain quality test results of the grain and product quality supervision and testing center of the Ministry of Agriculture, it contains 21.66% crude fat and 41.29% crude protein, which meets the national standard of high-oil and high-protein soybeans with good quality. Resistant to soybean mosaic virus and cyst nematode disease, but also resistant to drought and lodging. The growth period is about 130 days in Shenyang.

two。 Yield performance

3. Key points of cultivation

The main results are as follows: (1) the plots with water and fertilizer conservation, fertile soil, deep soil layer, uniform soil fertility, flat terrain and pH 7 should be selected for land selection and soil preparation. To fine soil preparation, ploughing about 20 cm, so that the ground is flat and broken, there is no bumpy, empty on the top and solid on the bottom, so as to create good conditions for sowing and seedling protection.

(2) seed selection and sowing should select good seeds before sowing, and select good seeds with full, neat, disease-free, injury-free and high germination rate (more than 95%). Hole sowing was carried out with row spacing of 50 cm to 60 cm, hole spacing of 15 cm to 20 cm, 2 grains per hole and soil thickness of 3 cm to 5 cm, and then suppressed immediately after sowing.

(3) seedlings and fixed seedlings must be early and fixed seedlings, usually between the true leaves and before the first compound leaves, and the seedlings can be fixed after the first compound leaves are unfolded. Be sure to choose healthy seedlings with normal growth, disease-free and injury-free. Under normal circumstances, it is appropriate to plant about 12000 plants per mu.

(4) fertilization and irrigation during soil preparation, 3000 kg of mature high-quality farm manure and 15 kg of diammonium phosphate per mu were applied as base fertilizer. In the early flowering stage, 5 kg of urea per mu should be applied as grain fertilizer, and the mixture of nitrogen, phosphorus, potassium, molybdenum, zinc, manganese and boron should be sprayed as foliar fertilizer at grain filling stage. From flowering stage to grain filling stage, if the soil is short of soil moisture and there is no rain, it must be irrigated in time.

(5) weeding and soil cultivation after sowing to before emergence, spraying 5 grams of 20% sulfuron-methyl and 50% Acetochlor 100ml 125 ml on the ground, which can not only kill weeds but also control rabbit silk. 2 or 3 shovels should be completed before the plant is closed, which can not only eradicate weeds but also cultivate soil to prevent toppling. If there is still a big grass, it should be pulled up at any time.

(6) seed coating with seed coating agent before sowing can achieve the double effect of killing bacteria and controlling underground pests. Luheng No. 3 wettable powder can be used to control diseases such as downy mildew and leaf spot. 1.8% avermectin is used to control pests such as aphids and red spiders. Slow-release cards were dipped in dichlorvos to control soybean heart-eating insects, bean pod borer and other boring pests.