有机肥部分替代化肥对油菜养分吸收利用的影响
毕业论文关键词：油菜；有机肥；化肥；养分吸收利用
Effects of Partial Substitution of Organic Manure for Chemical Fertilizer on Nutrient Absorption and Utilization of Rapeseed
Abstract：The field experiment was carried to study the effects of application of four different organic manure on soil fertility and nutrient absorption and utilization of rapeseed, to provide scientific basis for rational fertilization and efficient production of rapeseed. 9 treatments were set as follows: the total amount of chemical fertilizer(CF), 40% reduction of chemical fertilizer(RF), the total amount of chemical fertilizer with rice straw(CFR), 40% reduction of chemical fertilizer with rice straw(RFR), the total amount of chemical fertilizer with biochar(CFB), 40% reduction of chemical fertilizer with biochar(RFB), 40% reduction of chemical fertilizer with pig manure(RFP), 40% reduction of chemical fertilizer with vermicompost(RFV). These treatments were applied to the crop in a randomized complete block design with four replicates. The results showed that partial substitution of organic manure for chemical fertilizer could improve soil fertility, and increase the grain yield and nutrient use efficiency of rapeseed. The effect of RFV treatment on soil fertility and nutrient absorption and utilization of rapeseed was the best, followed by RFP treatment. Compared with CF treatment, the nitrogen partial factor productivity and apparent recovery efficiency of applied of RFV treatment increased by 35.16% and 59.50%, respectively. And the phosphorus partial factor productivity and apparent recovery efficiency of applied of RFV and RFP treatments were significantly lower than those in CF treatment.
Key words: rapeseed; organic manure; chemical fertilizer; nutrient absorption and utilization.
目录
摘要 1
关键词 1
Abstract 1
Key words 1
引言 1
1 材料与方法 2
1．1 试验地概况 2
1．2 试验设计 2
1．3 测定项目与方法 3
1．3．1 土壤样品的采集与测定 3
1．3．2 植株样品的采集与测定 3
1．3．3 产量及地上部生物量测定 3
1．4 参数计算与统计分析 3
2 结果与分析 3
2．1 有机肥部分替代化肥对土壤养分含量的影响 3
2．2 有机肥部分替代化肥对作物产量和地上部生物量的影响 4
2．3 有机肥部分替代化肥对作物植株各部位养分含量的影响 4
2．4 有机肥部分替代化肥对作物植株养分累积量的影响 5
2．5 有机肥部分替代化肥对作物养分利用率的影响 6
3 讨论与结论 6
致谢 8
参考文献 8