本试验以郑单 958 和先玉 335 为供试品种,设不同深松深度(CH30、CH40、CH50)3个水平,以常规浅旋15cm(SR)为对照,共四个处理。通过2014及2015两年试验,结果表明,深松可以打破犁底层,降低土壤容重,与对照相比,CH30、CH40、CH50的土壤含水量分别提高了5.5%、6.0%和7.4%；0-80cm土层的根长分别增加了26.64%、35.96%和47.45%,根表面积分别增加了26.82%、42.92%和62.49%,根干重分别增加了4.02%、8.48%和13.23%,三个处理间表现为CH50>CH40>CH30。深松处理的干物质较对照平均增加了4.8%,各深松处理间的差异不显著；产量平均增加了4.3%,表现为CH50>CH40>CH30。
英文摘要:
The experiment during 2014 and 2015 Used Zhengdan958 and Xianyu335 as test materials and set up 3 subsoil tillage depth(CH30、CH40、CH50)and No tillage(SR)as CK. The results indicated that subsoil tillage can break the plough and reduce soil bulk density, compared with conventional soil management, soil moisture content of CH30, CH40, CH50 respectively increased by 5.5%, 6.0% and 5.5%. 0-80 cm soil layer of root length increased by 26.64%, 35.96% and 47.45%, root surface area increased by 26.82%, 26.82% and 42.92%, the root dry weight respectively increased by 4.02%, 8.48% and 13.23%, the three treatments was in order of CH50> CH40> CH30. Biomass were increased by 4.8% on average in subsoil tillage treatments compared to conventional soil treatment and no significant difference between the subsoil tillage. grain yield were increased by 4.3% on average in subsoil tillage treatments compared to conventional soil treatment,the subsoil tillage was in order of CH50> CH40> CH30.
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