Bittersweet

It is also known as bitter hemp, sorrel, good hemp, goose vegetable, August old, lettuce, fat pig vegetable. It is a kind of feed with high yield, good quality, strong adaptability and good palatability. It is rich in amino acids and vitamins, has a long period of germination in early spring and a large amount of leaves.

Bitter marrow is a warm-loving and cold-resistant crop. The initial temperature for seed germination is 5-6°C and the optimum growth temperature is 25-35°C. The sorrel is very heat-resistant and can grow normally at a high temperature of 35-40°C. The frost has little effect on the sorrel, and its cold resistance is strong. Because of the tall plants, luxuriant stems and leaves, and strong regeneration, the roots absorb more water and the leaf surface transpires more water. The sorrel is not tolerant to waterlogging. In low-lying, standing water or flooded for several days, its roots are perishable and die.

The soil requirements are not strict, and it can be planted in various soils, but the fertile loam with good drainage is the most suitable for its growth. It is resistant to mild salt and alkali, and grows well on alkaline soils with a pH value of less than 8. It is more shade-tolerant and can be planted under the canopy of fruit trees.

It is high-yield, high-quality, and has strong regeneration ability. It can be cut 3 to 5 times a year in the north and 6 to 8 times a year in the south, producing 6000-8500 kilograms of fresh grass per mu. High yields can reach 10,000 kg. It not only has high yield, but also has high nutritional value. It contains high crude protein, crude fat and vitamins, and the crude fiber content is very low. Good palatability, pigs, sheep, chickens, cows, chickens, ducks, geese, fish, etc. are all fond of food.

At the same time, it also has the effect of promoting the appetite of livestock and poultry, helping digestion, dispelling fire and preventing diseases.

Planting points:

1. Rotation and soil preparation: Sorbet has strong adaptability. Various grain crops, vegetables, and fruits are all good predecessors of it. The seeds of Sorbet are small and light, the top soil strength is weak, and the planting is early. Seeding can be done from August to August, and ploughing is required, the ploughing depth should be above 20 cm, and the leveling and rake are fine. The sorrel is suitable for cropping for irrigation. The size of the border can be adapted to local conditions, generally 2 meters wide and 5-10 meters long. It can be made into a large border when broadcast by machine.

2. Application of base fertilizer: Sophora is a high-yield and high-quality crop that requires more fertilizer. Before sowing, it is necessary to apply adequately decomposed organic fertilizer as base fertilizer, generally 2300~5000 kg per mu.

3. Sowing: Swallow saffron is generally used for direct seeding, and seedlings can also be transplanted. Sowing is usually started as soon as the ground is frozen, and can be planted at the same time as spring wheat in the north, and can also be planted in autumn in the south, or multiple crops can be carried out after early maturing crops such as wheat and peas, so as to achieve two crops a year. The bitter sorrel is mostly broadcasted by drill, machine, columbine, and it can also be broadcasted. The row spacing is 20~30 cm, the sowing rate is 0.5~0,77 kg/mu, and the sowing depth is 2~3 cm. Suppress it in time after sowing. When the density is too high, the seedlings can be thinned appropriately. The application of sufficient nitrogen fertilizer can promote the development of more leaves and significantly increase the yield and quality. Insufficient phosphorus and potassium are slow growth, delayed maturation, and easily cause lodging. In addition to applying sufficient base fertilizer, topdressing decomposed manure, ammonium sulfate, urea and other chemical fertilizers should be applied after each cutting, combined with irrigation, in order to promote regeneration. When the plant reaches 40 to 50 cm in height, it can be cut for the first time. Then cut again every 20 to 40 days, and each cut should be timely in order to maintain high nutritional value.