| 陈留美,吕家珑,桂林国,王世荣,刘娜娜.新垦淡灰钙土微生物生物量碳、氮、磷及玉米产量的研究[J].干旱地区农业研究,2006,(2):48~51 |
| 新垦淡灰钙土微生物生物量碳、氮、磷及玉米产量的研究 |
| Studies on soil microbial biomass C，N，P and maize yield in newly cultivated light sierozem |
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| DOI：10.7606/j.issn.1000-7601.2006.02.11 |
| 中文关键词: 新垦淡灰钙土 微生物生物量碳、氮、磷 施肥 玉米产量 |
| 英文关键词:newly cultivated light sierozem microbial biomass C, N and P,fertilization yield |
| 基金项目:“973”项目(2005CB121102)； 教育部博士点基金项目(20040712001)； 黄土高原土壤侵蚀与旱地农业国家重点实验室基金(10501-138) |
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| 中文摘要: |
| 通过设置在宁夏红寺堡灌区开垦4 a的淡灰钙土上的定位试验,研究了不同施肥对新垦淡灰钙土微生物生物量碳、氮、磷及玉米产量的影响。结果表明:各施肥处理可以明显提高土壤微生物生物量碳、氮、磷含量,不同处理相比,化肥配合羊粪效果最好,单施羊粪次之,单施化肥最低;与对照相比各施肥处理对玉米的增产效果极显著,各处理作用效果的排序为:氮磷+羊粪>氮磷锌钾>氮磷锌>氮磷>氮>羊粪>不施肥,氮磷+羊粪处理与单施氮肥和单施羊粪之间差异达极显著水平。化肥与有机肥羊粪配合施用既能显著增加土壤微生物生物量碳、氮、磷含量又能使玉米产量显著提高,因此是新垦淡灰钙土施肥的最佳选择。土壤微生物量碳与有机碳呈极显著正相关,与全氮呈显著正相关,表明其与土壤肥力关系密切,可作为评价新垦地土壤质量变化的生物学指标。 |
| 英文摘要: |
| The effects of different fertilization on soil microbial biomass C,N,P and maize yield in light sierozem were investigated with a field experiment,which was continued for 4 years at Hongsibu irrigated area of Ningxia.The results showed that the fertilization treatments significantly increased the contents of microbial biomass C,N and P compared with control,but there were significant differences among different treatments.The best effect was found in the treatment of chemical fertilizers + sheep manure,the second was sheep manure,and the lowest was chemical fertilizers.Fertilization significantly increased maize yield in the following order: NP + sheep manure >NPZnK>NPZn>NP>N>sheep manure>control.There were significant differences between NP + sheep manure and N or sheep manure. The compound application of chemical fertilizers and sheep manure not only increased the contents of microbial biomass C,N and P but also raised the yield of maize,therefore,it was the best fertilization measure in the newly cultivated light sierozem.Significant positive correlation was found between soil microbial biomass C and organic C as well as total N,so soil microbial biomass C could be regarded as a biological indication to identify the quality change of newly cultivated soil. |
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