Changes in plant nutrient content and caloric value following grassland burning in various time and frequencies were studied.
研究了不同时间不同频次的草原火烧后，植物体内营养含量和热值的变化。
Effects of grassland burning on plant height growth, moisture and chlorophyll content were studied.
研究了草原火烧对植物高生长、体内含水率和叶绿素含量的影响。