Effects of Plastic-film Mulching on Forage Maize in an Agro-pastoral Ecotone in North China
A field experiment was conducted to study the effects of plastic-film mulching on soil temperature and field water storage, biomass accumulation dynamics, nutrient uptake and dry matter yield of forage maize. Results indicated that soil temperature within 20 cm depth was 1.85 ℃ higher under plastic-film mulching before late July. For the whole growing season,plastic-film mulching could increase cumulative soil temperature within the 20 cm depth by 158.5 ℃. Plastic-film mulching effectively prevented soil water evaporation in the early growth stage of forage maize and created favorable conditions for optimum water consumption in the late growth stage. It also enhanced nutrient uptake by forage maize and improved its nutritional state with high assimilation capacity. The difference between mulched and nonmulched maize biomass accumulation was quantified using fitted logistic equation. It was found that plastic-film mulching increased hay yield and water-use efficiency of forage maize by 25.5％ and 14.6％ respectively. It was concluded that the technique of planting forage maize with plastic-film mulching led to the efficient utilization of available rainfall and effective resolution of forage shortage problem.
Plastic-film mulching Forage maize Temperature Biomass accumulation Water consumption
Du Xiong Hu Yukun Zhang Weihong Bian Xiuju Zhang Lifeng
College of Agronomy, Agricultural University of Hebei, Baoding 071001, China Centre for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese College of Plant Protection, Agricultural University of Hebei, Baoding 071001, China
国际会议
北京
英文
297-305
2006-10-14（万方平台首次上网日期，不代表论文的发表时间）