摘要
通过对土壤含水量、土壤容重、土壤硬度、产量及农艺性状的测定和分析,研究了不同深松时间、深松效果下土壤物理性状和玉米产量的变化并进行相关分析。试验结果表明:经过春季深松40 cm的玉米产量最高,为9 442.5 kg/hm2,比对照增产18.84%,行粒数和百粒重以春季深松40 cm处理的最大。产量与苗期土壤含水量存在极显著正相关,与土壤容重和土壤硬度存在极显著负相关。玉米生育期间对照土壤含水量低于不同处理,春季深松40 cm和深松30 cm处理的土壤含水量高于其他处理。
According to the mensuration and analysis of soil moisture,soil bulk density,soil hardness,corn yield and agronomic characters,we researched the change and correlation analysis between corn yield and soil physical properties by different subsoiling time and different subsoiling effect.The results showed the highest output was 9 442.5 kg/hm2 after subsoiling 40 cm in spring,the corn yield was higher 18.84% than CK,kernels per row and weight of hundred grains were also best.We found that the corn yield was highly significant positive correlation with oil moisture and was highly significant negative correlation with soil bulk density and oil hardness at seedling stage.During the growing period,the soil moisture with different treatment was higher than CK,soil moisture after subsoiling 40 cm and 30 cm in spring was higher than other treatments.
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2013年第3期15-18,共4页
Soil and Fertilizer Sciences in China
基金
国家玉米产业技术体系
"十二五"农村领域国家科技计划课题:辽宁春玉米粳稻大面积均衡增产技术集成研究与示范(2012BAD04B03)
关键词
土壤物理性状
玉米产量
深松
相关分析
soil physical properties
corn yield
subsoiling
correlation analysis
