(1) After the grass is harvested, the grass is ridged to a certain width, and the grass ridges are turned over regularly. Especially in the second stage of water dispersion loss (that is, the loss of water in the body of the plant or the bound water), it is necessary to keep the grass ridges and promote the coordination of external and internal water. 7nt China Feed Industry Information Network - based on feed, serving animal husbandry

When handling operations such as weeding, gathering, and bundling, it should be carried out when the soft part of the plant has not been broken or broken. 7nt China Feed Industry Information Network - based on feed, serving animal husbandry

(2) Dry-cultivated forage crops, especially for legume feed crops, which are tall and have high water content, and can be dried by straw drying method. Using straw frame drying, the forage can be dried on the ground for 4-10 hours, and when the water content is reduced to 40% to 50%, the forage is stacked on the grass frame from bottom to top. 7nt China Feed Industry Information Network - based on feed, serving animal husbandry

(3) The parts in the body of the flattened stalk not only have different water content, but also have different water-dissipating strength, resulting in uneven drying speed and prolonged drying time. In order to achieve the basic synchronization of the stem and leaf drying speed of the forage crops (such as legumes) and to increase the speed of drying the whole fresh grass in the field, the stalks are often flattened by a mowing press when harvesting the forage. The degree of flattening is generally divided into two types, one is light pressing, that is, the stem has longitudinal cracks after flattening, but does not separate. The other is heavy pressure, the stem has longitudinal cracks and splits. The drying time of heavy crushing is shortened by 1-51 hours than that of non-flattening. The drying time of light flattening is shortened by about 21-29 hours than that of non-flattening, but the liquid is squeezed out when the flattening is repeated, and the inside of the stem is completely exposed. In the air, the oxidation is strong, so the protein loss is high, so, in general, lightly flattened and dried, the effect is best. 7nt China Feed Industry Information Network - based on feed, serving animal husbandry

(4) The use of chemical agents using dehydrating agents can destroy the plant's stratum corneum and cell membranes, promote the evaporation of water in plants, and accelerate the drying speed. The most used chemical agents are: organic acids (propionic acid, acetic acid), acid salts (sodium diacetate, sorbic acid), inorganic salts (potassium carbonate, sodium hydrogencarbonate, sodium chloride, etc.), ammonium compounds, urea , fermentation products, etc. Tests have shown that the addition of 3% potassium carbonate during the alfalfa hay preparation process results in a rapid decrease in water content and a 34% increase in drying rate. 7nt China Feed Industry Information Network - based on feed, serving animal husbandry