Fast-leaf defoliation is a cross-breeding cultivar produced by the use of the Korean giant locust black locust, which is a female parent and has no hedgehog as a parent. The leaves are broad and have a large amount of leaves. Their fresh stems and leaves can be cast many times a year. Utilization or direct grazing use.
The large-leaved fast-growing locust is drought-tolerant, cold-tolerant, and soil-poor. It is suitable for growing in a climate zone with an average annual temperature of 6 to 9°C and an annual precipitation of 500 to 1,200 mm. Because the large-leaved fast-growing carp has strong drought tolerance, the northwestern arid and semi-arid areas with annual rainfall of 200 to 400 mm can also grow normally. Whether it is sandy soil, barren wasteland, degraded grassland, floodplain, light acidic soil and light saline-alkali soil, even large-scale slag heaps and weathered sand and gravel can be planted with large-leaved fast-growing eel.
First, feed value and harvesting and utilization
After eight years in the North Institute of Horticulture in Ji’an City, Jilin Province, the cultivation experiment was conducted in Northwest, North China, East China and other places, which proves that the large-leaved fast-growing eel has six major production characteristics and high economic value: First, fast-growing and high-yield. Fast-growing large-leaved fast-breeding scorpion grows fast, and grows to a height of 2 to 3 meters in the year. The growth rate is 2 to 3 times that of common locusts, 10,000 to 20,000 kilograms of fresh stems and leaves, and 2 to 4 cows. 6 to 12 sheep. The second is high nutritional value. The leaves of fast-growing locusts contain 21% to 25% of crude protein, 4% to 5.5% of crude fat, and 11% to 15% of crude fiber. They are rich in vitamins, trace elements, and amino acids and are high-energy feeds. The third is good palatability and high digestibility. Fast-leaf stalks have fresh stems and leaves, soft texture, good palatability, and high digestibility. Cattle, sheep, deer, rabbits, pigs, ostriches, and geese all prefer to eat, and can significantly promote the growth of livestock and poultry. Livestock and poultry have no toxic side effects. Fourth, easy planting, extensive management, and low production costs. The survival rate of planting fast-growing eel is more than 95%, and it can be used in the year of planting. The management is simple and extensive, labor-saving and labor-saving, and the production cost is only about 10% of other pastures. Fifth, the domestic demand is large and the export prospects are good. The eucalyptus leaf powder is a feed that is deeply welcomed by the two major forage farmers in Japan and South Korea and has a large import volume. The potential market is about 5 million tons, and the demand in other international markets is also relatively large. Sixth, economic benefits are good. Planting large-leaved fast-growing oysters, breeding cattle or sheep, or selling forage grass income from 2000 to 4,000 yuan/mu is 4 to 6 times the income from planting corn. Growing large-leaf fast-growing pupae on poor sandy lands has more significant economic benefits.
The foliar part of the fast-leaving fast-feeding quail is leaves and fresh stems, and green fodder, silage, and sun-dried grass powder or granular feed are all good. The climate varies from north to south, and the number of harvests is also different. Generally, it is cut 2 to 4 times a year, and it can be cut 1 or 2 times in the year of planting. When the big-leaved fast-growing carp grows to a height of 0.8 to 1 meter, the shoots, leaves and petiole are tender and tender, with rich nutrition and good palatability. Harvested too late, the stems become old, the crude fiber content is high, the nutritional value and composition are decreasing, the palatability is poor, and the digestibility is low. Early harvest, low yield, low nutrient content. Feeding test results showed that long-term feeding of fast-breeding oysters, such as cattle, sheep, geese and other livestock and poultry is safe, reliable, and has no cumulative toxicity. It has a certain degree of promoting effect on the growth and development of livestock and poultry, and production performance.
Second, seedling propagation and cultivation techniques
1. Garden selection. The nursery site should be near the feed base, with convenient transportation, easy management and free from wind and sand, flat terrain, sunny, easy irrigation, and sandy loam. Soils with poor viscidity and poor drainage, and places with serious pests and diseases should not be used as nursery sites.
2. Breeding of seedlings and seedlings. Large-leaved fast-growing mites use seedling roots to propagate seedlings and propagate roots. The early stage of nursery period will directly affect the quality of seedlings and the yield of seedlings. In principle, when the soil temperature reaches above 5°C, the nursery season is appropriate from March to April, and the high temperature areas in the south can combine autumn nursery and early spring nursery. In early spring, the soil moisture is sufficient. With the rise of the ground temperature, the roots easily sprout root buds and the rate of seedling formation is high. Nursery selection of 1 to 2 years old leaves of the main fast-growing mites, lateral roots, diameter of 0.5 to 1 cm is appropriate. The roots are cut into small pieces of 10 to 15 centimeters in length. They are planted in Daejeon by the method of flat burial and are buried 5 to 10 cm deep. Datian Twagen (seedlings) line spacing is generally 30 cm 60 cm, 3000-4000 per acre seedlings, producing 100 to 150 kg of root. In order to make the large-leaved fast-growing pods sprout quickly, emerge early, and have high germination rates at the nursery, the nursery should be irrigated in an appropriate amount to keep the soil moist.
3. Rapid root-sweeping transplant seedling method. The fast-growing roots of the big-leafed larvae are strong and powerful. When the seedlings are raised at the planting base, the roots of the main and lateral roots can be preserved for 15 to 20 centimeters. In the following year, these remaining root shoots will grow new plants. Planting 1000 seedlings per acre can sprout 3000 to 4000 plants in the second year after emergence.
The prospects for the planting of fast-growing eel are extremely broad. It is possible to start and build a large-leaf fast-growing ecological protection and feed-base construction project according to local conditions.
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