A field experiment was conducted to explore better coverage in seedling emergence of Larix olgensis in the Jilin province, five kinds of coverage method were designed in field experiment. Results showed that there were significant different in L.olgensis seedling emergence and soil evaporation in different kinds of coverage, the seedling emergence rate varied from the highest to the lowest was sawdust, turf soil, smash of straw, coal cinder and sand successively. The soil evaporation from the highest to the least was turf soil, coal cinder, CK, sand, sawdust and smash of straw successively. The temperature of soil surface is influenced significantly by different coverage.
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
[1]武喆,闫秋艳,张光星. 覆土厚度及覆盖物对胡萝卜种子出苗的影响[J]. 种子科技,2007,25(6):43-44. [2]李贻学,李新举,刘太杰,等. 秸秆覆盖与抗旱剂对烟田土壤水分及烟株生长的影响[J]. 山东农业大学学报:自然科学版,2002,33(2):144-147. [3]叶其兴. 不同覆盖物对单季稻旱育秧秧苗素质的影响[J]. 内蒙古农业科技,2005(1):56. [4]王新军,朱小强,吴珍,等. 丹参播种育苗技术的试验研究[J]. 商洛师范专科学校学报,2004,18(1):87-89. [5]王俊,王卓晗,杨龙,等. 浇水频率和凋落物覆盖量对黧蒴锥种子萌发及幼苗存活的影响[J]. 应用生态学报,2008,19(10):2097-2102. [6]Kern J S, Johnson M G. Conservation tillage impacts on national soil and atmospheric carbon levels[J]. Soil Science, 1993, 57: 200-210. [7]Paustian K, Andren O, Janzen H, et al. Agricultural soil as a C sink to offset CO2 emissions[J]. Soil Use Manage, 1997, 13: 230-244. [8]高云超,朱文珊. 秸秆覆盖免耕土壤微生物生物量与养分转化的研究[J]. 中国农业科学,1994,27(6):41-49. [9]王芸,韩宾,史忠强,等. 保护性耕作对土壤微生物特性及酶活性的影响[J]. 水土保持学报,2006,20(4):120-122,142. [10]牛新胜,张宏彦,王立刚,等. 玉米秸秆覆盖冬小麦免耕播种对土壤微生物量碳的影响[J]. 中国土壤与肥料,2009(1):64-68,73.
PDF(797829 KB)
