High quality and efficient feed corn suitable for planting in the north
1 high quality feed corn variety
Silage Corn - Zhongyuan Dan 32: Selected by the Chinese Academy of Agricultural Sciences. The main feature is that after the grain matures, the straw remains green and nutritious, and the crude protein of the grain straw is higher than that of ordinary corn. Compact plant type, plant height 240~270 cm; stem toughness, total leaves 21~22; developed root system, resistant to large spot disease, bacterial wilt and grain rot, lodging resistance, drought tolerance, rain, cold damage, etc.; The grain protein 11.35%~12.62% straw contains 7.8%~10.5% of protein; the yield is high. Under the condition of medium and upper water and fertilizer, the grain grain (667 square meters) produces 600 kg, and the green straw yields 5000~6000 kg.
Silage Corn - Liaoyuan No. 1: High-yield and high-quality white maize hybrids successfully selected by Liaoning Academy of Agricultural Sciences. Liaoyuan No. 1 has a lush plant, strong stems, strong resistance to stress, and wide adaptability. It can be used for both silage and food. The grain contains 9.03% crude protein, 4.82% crude fat, coarse and full green ear, 0.87% water-soluble polysaccharide, and boiled fresh food with musk flavor. Its yield is 4000-6000 kg of green material and 500-600 kg of grain. Strong resistance to stress, strong resistance to large spot disease, small spot disease and bacterial wilt. There is also strong drought resistance and lodging resistance.
Silage corn - "Sui Suihong": This variety is a hybrid of highland corn cultivated in China. The main features are as follows: First, it has tillering, each branch has 3~5 branches, and the growth period is generally 140 days. Green ear, but difficult to produce mature seeds, plant height 2 to 3 meters, leaves flourish; second, high yield, more than 7000 kilograms of fresh produce per mu, stems and leaves juicy and tender, nutritious.
Nutritious Corn - Zhongdan 206: This variety is a nutritious corn hybrid cultivated by the Chinese Academy of Agricultural Sciences. The main feature is that the lysine content is as high as 0.47%. The seed is 400-450 kg per mu and the growth period is 105-110 days. Feeding pigs with high-lysine corn instead of ordinary corn, the daily gain is increased by 30% to 50%, and the weight per kilogram is less than 0.5 to 1.5 kg.
2 silage corn cultivation technology
Land preparation: The soil is loose and fertile, and the organically rich plots are conducive to high yields.
Sowing: Same as the sowing period of the field crops. In most areas of the north, it is usually planted in late April. Reasonable close planting is conducive to high yield. If seeding is carried out by precision seeding machine, the seeding rate per acre is 2.0~2.5 kg. The seeding rate per acre is 2.5~3.0 kg. The average number of seedlings for green corn is 3800~4500. The ridge is used for large ridges, the row spacing is 60 cm, the plant spacing is 15~20 cm, single or double sowing, double Strip production generally yields higher yields.
Mixed broadcast: Green-mixed corn and alfalfa mixed is an important stimulation measure, and can also greatly improve the quality of green corn. Corn is the main crop, and soybean or hibiscus is mixed between the plants. The grass raft is a legume forage, the root has a nitrogen-fixing function, and the corn can provide nitrogen by using the leguminous forage rhizobium to increase its yield and improve nutritional value.
Management: The same as the field crop management method, the seedling growth is slow, and weeding, seedling, fertilization and cultivating are required. The growth from tillering to dialing is accelerated, and the amount of fertilizer per acre is 10-15 kg.
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