不同改良材料作用下宅基地复垦土壤硝态氮运移研究
发布时间：2019-01-18 07:53
【摘要】：针对宅基地新复垦土壤耕作层养分含量低、保水保肥性能差的问题,在氮磷钾肥料平衡施用的前提上,通过田间定位试验,研究冬小麦生长季添加粉煤灰(TC)、有机肥(TF)、熟化剂(TS)、熟化剂+粉煤灰(TSC)、粉煤灰+有机肥(TFC)、熟化剂+有机肥(TSF)对复垦土壤硝态氮运移、累积情况与作物产量的影响。结果表明:添加熟化剂+有机肥和熟化剂+粉煤灰的处理能够促进表层撒施氮肥转化为硝态氮,添加有机肥易导致硝态氮向土壤深层运移,而添加粉煤灰则会减弱这一过程。熟化剂+有机肥处理在小麦生长初期耕作层能够储备较多的硝态氮,为后期小麦生长提供氮素。随着时间的推移,添加单一改良材料土壤较添加复合改良材料土壤硝态氮累积效应更为明显。添加有机肥和熟化剂在复垦生土熟化过程中对小麦增产有重要作用,有机肥能有效减少小麦空秆率,提高成穗数,粉煤灰在土壤熟化过程中对小麦增产作用不大,添加熟化剂+有机肥是处理宅基地复垦土壤熟化较为优良的改良方法。
[Abstract]:In view of the problems of low nutrient content and poor performance of water and fertilizer preservation in the cultivated layer of newly reclaimed soil on the homestead, on the premise of balanced application of nitrogen, phosphorus and potassium fertilizer, the field location experiment was conducted to study the addition of fly ash (TC), in winter wheat growing season. Effects of (TF), maturation agent, (TS), maturation agent, fly ash, (TFC), maturation agent, (TSF) on nitrate transport, accumulation and crop yield in reclaimed soil. The results showed that the treatment of organic fertilizer and fly ash could promote the transformation of surface applied nitrogen fertilizer to nitrate nitrogen, and the addition of organic fertilizer would lead to the transfer of nitrate nitrogen to the deep layer of soil, but the addition of fly ash would weaken the process. At the beginning of wheat growth, organic fertilizer treatment could store more nitrate nitrogen, which could provide nitrogen for later wheat growth. As time went on, the effect of nitrate accumulation in soil with single modified material was more obvious than that with compound improved material. The addition of organic fertilizer and maturation agent plays an important role in wheat yield increase in the process of reclaimed soil maturation. Organic fertilizer can effectively reduce wheat straw rate and increase the number of spikelets, but fly ash has little effect on wheat yield increase during soil ripening. The addition of maturation agent organic fertilizer is a better method to deal with the maturation of reclaimed soil on the homestead.
【作者单位】： 陕西省土地工程建设集团有限责任公司/陕西地建土地工程技术研究院有限责任公司/国土资源部退化及未利用土地整治重点实验室/陕西省土地整治工程技术研究中心;
【基金】：陕西省重点科技创新团队计划项目(编号:2016KCT-23)
【分类号】：S153.6
，
本文编号：2410481
[Abstract]:In view of the problems of low nutrient content and poor performance of water and fertilizer preservation in the cultivated layer of newly reclaimed soil on the homestead, on the premise of balanced application of nitrogen, phosphorus and potassium fertilizer, the field location experiment was conducted to study the addition of fly ash (TC), in winter wheat growing season. Effects of (TF), maturation agent, (TS), maturation agent, fly ash, (TFC), maturation agent, (TSF) on nitrate transport, accumulation and crop yield in reclaimed soil. The results showed that the treatment of organic fertilizer and fly ash could promote the transformation of surface applied nitrogen fertilizer to nitrate nitrogen, and the addition of organic fertilizer would lead to the transfer of nitrate nitrogen to the deep layer of soil, but the addition of fly ash would weaken the process. At the beginning of wheat growth, organic fertilizer treatment could store more nitrate nitrogen, which could provide nitrogen for later wheat growth. As time went on, the effect of nitrate accumulation in soil with single modified material was more obvious than that with compound improved material. The addition of organic fertilizer and maturation agent plays an important role in wheat yield increase in the process of reclaimed soil maturation. Organic fertilizer can effectively reduce wheat straw rate and increase the number of spikelets, but fly ash has little effect on wheat yield increase during soil ripening. The addition of maturation agent organic fertilizer is a better method to deal with the maturation of reclaimed soil on the homestead.
【作者单位】： 陕西省土地工程建设集团有限责任公司/陕西地建土地工程技术研究院有限责任公司/国土资源部退化及未利用土地整治重点实验室/陕西省土地整治工程技术研究中心;
【基金】：陕西省重点科技创新团队计划项目(编号:2016KCT-23)
【分类号】：S153.6
，
本文编号：2410481
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