Peanut macronutrient absorptions characteristics in response to soil compaction stress in typical brown soils under various tillage systems
Peanut macronutrient absorptions characteristics in response to soil compaction stress in typical brown soils under various tillage systems
复制标题
不同耕作方式典型棕壤土壤压实胁迫下花生大量养分吸收特性
DOI：
10.1080/00380768.2019.1579043
复制
发表时间：
2019-03-04
影响因子：
2
通讯作者：
He, Xinhua
中科院分区：
文献类型：
--
作者：
Shen, Pu;Wang, Chunxiao;He, Xinhua
摘要土壤耕作是一种重要的农业管理方式，可以有效地改变土壤结构和植物生长，特别是在花生种植园。中国，为了了解不同耕作措施对花生氮、磷、钾吸收和利用效率的影响，在山东岐山、望城和夏甸3个花生产区进行了免耕(NT)、深松(DL)、深耕(DP)和浅犁(SP)4种耕作处理的两年试验。结果表明，三种处理的土壤容重均比免耕处理降低7.1~19.5%。花生地下部分平均全N积累量以DP(163 kg/hm2)+GT；SP(149 kg/hm2)+GT；DL(144 kg/hm2)+GT；NT(117 kg/hm2)显著高于其他处理，而地上部分全N比其他处理高8.7~22.1%。地下部分对N、P、K的吸收极显著地促进了花生的高产(P<；0.01)，而地上部分对N、P的吸收增加并不能提高花生产量。土壤容重与花生地下部分植物常量营养元素含量和花生产量呈极显著负相关(P<；0.01)。此外，N：P、N：K和P：K比值在非压实胁迫和非压实胁迫下的DL、DP和SP处理中相似。这些结果表明，DP是一种合理的耕作措施，可以通过缓解花生田的土壤压实压力来增加养分的吸入量、效率和花生产量。
ABSTRACT Soil tillage, a major agricultural management, could effectively alter soil structure and plant growth, particularly under groundnut plantations. To understand effects of different tillage measures on nitrogen(N), phosphorus(P) and potassium(K) absorptions and use efficiencies for peanut (Arachis hypogaea L.), four tillage treatments: no tillage (NT), deep loosing (DL), deep plow (DP), and shallow plow (SP), were examined for two growing years at three typical peanut-producing sites of Qishan, Wangcheng, and Xiadian in Shandong, China. Results showed that average soil bulk density under DL, DP, and SP at the three sites was decreased by 7.1–19.5% compared with NT treatment for the 2 years. Significantly higher average total N accumulations in underground peanut part patterned as DP (163 kg/ha) > SP (149 kg/ha) > DL (144 kg/ha) > NT (117 kg/ha), while total N in aboveground peanut part was 8.7–22.1% higher under DP than other treatments. Absorptions of N, P, and K in underground parts were extremely significantly contributed to high peanut yields (P < 0.01), whereas increase of N and P absorptions in aboveground parts did not promote peanut yields. Soil bulk density was significantly negatively correlated with plant macronutrient amounts in underground peanut parts and peanut yields (P < 0.01). Moreover, N:P, N:K, and P:K ratios were similar between NT and noncompaction stress treatments of DL, DP, and SP. These results indicate that DP is a rational tillage practice for promoting nutrient uptake amount, efficiency, and peanut yields by alleviating soil compaction stress in peanut-producing fields.