摘要
以石灰性潮土为供试土壤,进行盆栽试验,种植,研究小麦秸秆和猪粪施用对两茬樱桃萝卜植株生长、氮磷钾养分吸收的影响及对土壤肥力性状的当季效应与后效。结果表明,秸秆施用显著提高了两茬土壤有机质、全氮和速效钾含量,对提高了植株中钾含量效果明显,但降低了第一茬植株地上部生物量及植株含氮量。猪粪施用后,两茬植株地上部钾含量显著提高,土壤有机质、全氮、有效磷和速效钾含量明显增加。土壤中有效磷含量还维持较高水平,累积后效明显。高量猪粪使用明显促进了第一茬植株生长,提高植株中氮磷钾含量。两茬植株收获后,施用猪粪的土壤pH下降。中高量秸秆和3种用量猪粪处理的土壤EC值(可溶性盐含量)明显上升。结论认为:猪粪和秸秆施用提高土壤肥力效果明显,并能维持后效,但秸秆有机碳和钾含量较高,施用时注意配施氮磷肥,调节好C/N比。猪粪施用明显增加土壤有效磷含量。
A pot experiment using manure and wheat straw on plant fluvo-aquic soil was conducted to study effects of different rates of pig growth and nutrient uptake of cherry-radish （Raphanus Sativus） and characteristics of soil fertility. The results showed that the biomass of cherry-radish affected by pig manure application in the first harvest was better than that with wheat straw application. Moreover, high rate usage of pig manure enhanced plant growth and the concentrations of nitrogen phosphorus and potassium in plant shoots. But wheat straw application lowered the dry weight of plant roots and the concentration of nitrogen in plants. The concentrations of total nitrogen and available potassium in soil were increased by the application of wheat straw. The contents of organic matter, total nitrogen, available phosphorus and available potassium in soil were increased by utilization of pig manure. The addition of pig manure resulted in a reduction of soil pH value, while a rise of soil EC level. The middle and high rates of wheat straw application also lead to an increase of soil EC. The present study suggested that wheat straw application should be combined with certain rates of nitrogen and phosphorus fertilizers to be adjusted a suitable C/N ratio. The available phosphorus level in soils would be accumulated with the addition of pig manure.
出处
《中国农学通报》
CSCD
北大核心
2009年第5期165-172,共8页
Chinese Agricultural Science Bulletin
基金
国家高技术研究发展计划(863)课题(编号:2008AA06Z307)
"十一五"国家科技支撑计划课题(编号:2006BAD10B03)资助
关键词
猪粪
秸秆
樱桃萝卜
潮土
cheery radish, fluvo aquic soil, pig manure, wheat straw
