摘要
为明确深耕培肥对瘠薄黑土的改土效果,采用大田对比方法,以依安地区黑土为供试土壤,开展深耕培肥对瘠薄黑土土壤理化性质影响及对大豆产量的调查研究。结果表明:深耕培肥可以有效降低>10~30 cm土层土壤容重、硬度,提高土壤通气性,容重第1年和第2年分别下降0.09 g cm^(-3)和0.05 g cm^(-3),通气系数分别提高为34.01×10^(-5) cm s^(-1)和10.89×10^(-5) cm s^(-1),10 cm以下土层土壤硬度与对照相比呈明显下降趋势;同时,深耕培肥后>20~30 cm土层有效磷含量显著提高,两年增加幅度为15.05~16.23 mg kg^(-1);深耕培肥可以提高土壤速效钾含量,增加幅度为10.19~10.38 mg kg^(-1);并且深耕培肥提高了大豆产量,两年平均提高大豆产量达9.61%。
Field experiment was carried out in Yian areas, Heilongjiang Province, to study soil physical and chemical characteristics and soybean yield after deep tillage and fertilization in barren black soil. The result showed that soil bulk density and hardness decreased and soil aeration increased above 10 - 30 cm soil layer after deep tillage and fertilization. Soil bulk density decreased by 0.09 g cm-3 and 0.05 g cm-3, and soil aeration coefficient increased by 34.01 x 10-5 cm s-1 and 10.89 x 10-5 cm s-i, respectively, at the first year and second year of deep tillage and fertilization compared with traditional tillage. Deep tillage and fertilization for two years decreased soil hardness below 10 cm soil layer, increased soil available P and K, respectively, by 15.05 - 16.23 mg kg-1 and by 10.19 - 10.38 mg kg-1 above 20 - 30 cm soil layer, and increased the soybean yield by an average of 9.61%.
出处
《土壤通报》
CAS
CSCD
北大核心
2016年第6期1393-1398,共6页
Chinese Journal of Soil Science
基金
国家公益性行业(农业)科研专项(201303126-7)
国家科技支撑项目(2014BAD11B01-A027)
黑龙江省招标项目(GA14B101-A04)资助
关键词
深耕培肥
瘠薄黑土
理化性质
产量
Deep tillage and fertilization
Barren Black soil
Physical and chemical characteristics
Yield
