1, 苜蓿 It is generally believed that the flowering stage of the bud is the most suitable time for the pupa, and the crude protein and vitamin content is the highest.苜蓿 The last time cutting is performed at the flowering stage or one and a half months before frost. In addition, under the conditions of Daejeon production, if it is reaching a suitable cutting period, but it cannot be harvested and utilized in a large area at the same time, it can be appropriately casted in advance. 2. Sandawang Safflower is a low-toxic Astragalus plant, containing toxins that are organic nitro compounds that are bitter, camel-loving, and poor palatability in other livestock. Livestock generally do not eat fresh grass of Saskatchewan, but fresh grass livestock after frost can be eaten. The appropriate cutting period for sand-handling should not be later than the budding period. Normally, it can be cast twice a year. In some areas in the north, Sadawang cannot bloom all year round. The grazing season should be after the grass returns to green; about 112 days; the cold and dry areas are best for the September reaping. 3, grasshoppers Coriander contains coumarin, which affects its palatability, but it has less coumarin content before emergence, and has the highest protein, fat, and ash content in the bud stage and less crude fiber. With the growth of the plants, the proportion of the leaves declines, and the nutritional value also decreases significantly. Therefore, it should be cast from the bud to the current period. 4. Suitable for cutting period of annual legume grass 1 Appropriate grazing period for spring arrow peas (common peas): Spring pea peas have soft stems and leaves, a long period of use, and harvest time often varies depending on the purpose of use. If the preparation of hay is best from full bloom to the early stage of pods; if grass seed is harvested, summer sowing can be used, and once in autumn, the seeds are mature, the stems and leaves are green, and good quality hay can be obtained; When fed and mixed with oats or Sudangrass, spring spear peas can be sowed and oats or sudangrass can be sowed later to be castrated before flowering or heading. When used as green manure, it can be turned over or cut at the early flowering stage and turned into the soil 20 to 30 days before sowing in order to make it fully rot. 2 When the suitable cutting period of scorpion (winter arrow peas) is silage, it can be staged by cutting from the branching period to the poding stage, but the early flowering stage is the best; when used as a green fodder for pigs, it is castrated before flowering. When used as green fodder for cattle and horses, they are castrated from flowering to fruiting, and they are castrated at full blossom during the preparation of hay. Http:// High Precision Distance Sensor Laser range sensors combine the advantages of a visible red sensing beam with the increased range of a laser. The optical distance sensor devices are Class 2 lasers, support Class 1 customized. The high precision autonics distance sensor is successfully be used to connect to Arduino, Raspberry Pi, with +-1mm to 3mm high accuray, and long-range solutions (max up to 150m) for your application. Precision Distance Sensor,Precision Laser Distance Sensor ,Precision Distance Sensor Laser,Accurate Laser Distance Sensor Chengdu JRT Meter Technology Co., Ltd , https://www.rangesensors.com