T/YNGA 003-2023 Procedures for establishment and utilization of pasture with eastern African pennisetum and white clover for grazing

Scope

Scope: This standard specifies the technical methods for establishing and utilizing grazing grasslands with a mixed sowing of East African wolf grass and white clover in Yunnan, China. This standard applies to the subtropical and mid-to-high altitude regions of Yunnan, as well as temperate regions. Main technical content: 1. Scope 2. Normative references 3. Terms and definitions 3.1 Grazing artificial grasslands 3.2 East African wolf grass + white clover grasslands 3.3 No-tillage 3.4 Base fertilizers 3.5 Maintenance fertilizers The fertilizers applied to maintain the continuous growth of grasses or forage crops during their growth period or after grazing and mowing. Chemical fertilizers are generally used as the main fertilizers. 3.6 Forage growth rate The average daily production of dry forage mass per unit area of grassland during a specific period. 3.7 Sheep unit An adult sheep weighing 45 kg and consuming 1.8 kg of standard hay per day, or other livestock equivalent to this. The conversion ratio of various livestock to sheep units shall be implemented in accordance with the calculation method of reasonable carrying capacity of natural grasslands in NY/T 635-2015. 3.8 Appropriate carrying capacity Also known as theoretical carrying capacity. It refers to the maximum number of livestock that a certain area of grassland can support during a certain utilization period under the condition of moderate grazing (or mowing) and maintaining the sustainable production of grasslands, so as to meet the needs of livestock normal growth, reproduction, and production. 3.9 Actual carrying capacity The actual number of livestock supported by a certain area of grassland during a certain utilization period. 3.10 Rotational grazing Refers to the division of grazing grasslands into several zones. At the same time, only one zone of the grazing grasslands is grazed, and the other zones are rested. According to the grass growth conditions of the zones, the livestock are move

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