[1]ZHENG Peifeng,Zhang Xiaolong,SI Yu,et al.Effects of Subsoiling on Soil Moisture and Yield of Spring Maize Fields in the Sanjiang Plain[J].Research of Soil and Water Conservation,2023,30(01):297-303.[doi:10.13869/j.cnki.rswc.2023.01.032]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 01
Page number:
297-303
Column:
Public date:
2023-01-10
- Title:
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Effects of Subsoiling on Soil Moisture and Yield of Spring Maize Fields in the Sanjiang Plain
- Author(s):
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ZHENG Peifeng1,2, Zhang Xiaolong1,2, SI Yu1,2, LYU Yanjie2, WANG Lichun2, WANG Yongjun1,2
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(1.Faculty of Agronomy, Jilin Agricultural University, Changchun 130118, Chian; 2.Institute of Agricultural Resources and Environment, Jilin Academy of Agriculture Sciences/State Engineering Laboratory of Maize, Changchun 130033, China)
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- Keywords:
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subsoiling; Sanjiang Plain; spring maize; soil moisture; yield
- CLC:
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S513
- DOI:
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10.13869/j.cnki.rswc.2023.01.032
- Abstract:
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To investigate the effects of different methods of subsoiling on soil moisture and yield of spring maize fields in the Sanjiang Plain, a field subsoiling experiment was conducted at the experimental base of Jiamusi Branch, Heilongjiang Academy of Agricultural Sciences. The experiment was conducted at two depths(30 cm and 40 cm)and three periods(QS in the previous autumn, CS in the spring and XS in the summer), with conventional rototill treatment as the control(CT15). The results showed that the effect of 40 cm subsoiling was better than that of 30 cm, and the soil moisture contents of XS40 and QS40 in 0—10 cm soil layer were significantly higher than those of CT15 at the seeding stage(VE)and spatulation stage(R1), 29.17% and 9.25%, 21.02% and 12.94%, respectively; in 20—35 cm soil layer, QS40 was higher than that of CT15 at the spatulation stage(V6)and R1, 11.76% and 11.76%, respectively; the soil moisture contents of QS40 in jointing stage(V6)and silking stage(R1)was 11.76% and 7.82% higher than those of CT15 in 20—35 cm soil layer; deep mowing had positive effects on plant height, spike height and green leaf stage, but the differences between different deep mowing treatments were small; compared with CT15, QS30 reduced plant height by 5.53%, CS40 and XQS40 reduced spike height by 6.67% and 10.98%, respectively; compared with CT, the number of green leaves at maturity differed among treatments, with QS30, QS40 and XS30 having significant effects, 34.85%, 48.02% and 15.12% higher than CT, respectively; the QS40 treatment showed the best performance, with 56.60% decrease in bald tip length, 14.67% increase in number of ears and 10.26% increase in seed yield compared with CT15. In conclusion, both 30 cm and 40 cm deep soil loosening can improve soil moisture content, prolong the green leaf period and increase yield, and 40 cm subsoiling has more obvious effects; subsoiling performs best in autumn, followed by spring and summer. The 40 cm subsoiling in autumn can improve the soil moisture content of 0—50 cm, increase the grain weight of ears and improve the yield, and is the best solution among many subsoiling combinations and has some technical reference to reasonably determine the subsoiling solution for spring maize fields in the Sanjiang Plain.