不同地表覆盖对地温及竹笋生长的影响

Effects of mulching on soil temperature and bamboo shoot growth

为了研究不同地表覆盖对毛竹林地温及竹笋生长的影响,共设置了稻草覆盖型、稻草谷壳覆盖型、竹叶覆盖型及半荒芜型(对照)等4种处理类型,在发笋期测量了地表、10 cm深及20 cm深的林地土壤温度,并连续7 d观测了笋高、竹笋地径,结果表明:与对照组相比较,地表覆盖对笋高及地径均产生了极显著或显著的影响,至少增加笋高55.87%,增粗地径18.59%;地表覆盖对各层土温影响差异不显著。总体来说,稻草覆盖型影响,稻草谷壳覆盖型效果较显著,其次是竹叶覆盖型,半荒芜型表现较差。

Four mulching treatments which were straw mulching, straw and rice husk mulching, bamboo leaves mulching and no mulching （the control） were conducted to study the effects of mulching on the growth of bamboo shoot and soil temperature. The height and ground diametter of bamboo shoots were measured for lasting continuous 7 days in the bamboo shoot sprouting period, meanwhile, the temperatures of ground surface soil, 10 cm deep soil and 20 cm deep soil were measured. The results show that compared with the control, the soil surface mulching had significant effects on both the bamboo height and ground diametter which increased by 55.87%, 18.59%respectively at least, and no differences among the treatments in soil temperature for each soil layer. The conclusion was that the straw mulching and the straw＆amp;rice husk mulching had significant effects to the soil temperature, then the bamboo leaves mulching, and the no mulching treatment worst.