SUN Hong,CHEN Yong.Effects of Winter Conservation Tillage in Paddy Field on Soil Enzyme Activities and Rice Yield[J].HEILONGJIANG AGRICULTURAL SCIENCES,2022,(12):19-23.[doi:10.11942/j.issn1002-2767.2022.12.0019]
冬季保护性耕作对稻田土壤酶活性及水稻产量的影响
- Title:
- Effects of Winter Conservation Tillage in Paddy Field on Soil Enzyme Activities and Rice Yield
- 文献标志码:
- A
- 摘要:
- 为了合理利用农田,提高土地利用效率,改善稻田土壤环境,促进水稻增产。在连续2年大田分区定位试验基础上, 以水稻品种F优498为供试材料,研究了薯-稻(PR)、油-稻(RR)、冬闲-稻(WFR)3种种植模式下稻田土壤酶活性的动态变化及不同种植方式对水稻产量的影响。结果表明,PR、RR较对照WFR相比,可显著提高土壤中过氧化氢酶活性和脲酶活性,水稻整个生长期内过氧化氢酶活性在分蘖盛期和齐穗期达到峰值,2个时期均是PR模式最高,分别为2.78 和2.38 mL·g-1。3种耕作模式的脲酶活性均在水稻抽穗期最高,具体表现为PR>RR>WFR,抽穗期后稻田土壤脲酶活性开始下降,齐穗期至成熟期脲酶活性下降幅度最大。各处理下水稻单位面积的有效穗和产量的变化趋势均为PR>RR>WFR,PR和RR模式较WFR模式分别提高了14.00%、4.96%和7.23%、0.72%。说明PR、RR两种保护性耕作模式较WFR这种非保护耕作模式能够提高土壤酶活力,增加水稻有效穗数和产量。
- Abstract:
- In order to rationally utilize farmland and improve land use efficiency, improve the soil environment of paddy field and promote rice yield increase.Based on two consecutive years of field regionalized positioning experiments, the dynamic changes of soil enzyme activities and the effects of different planting methods on rice yield were studied under three planting modes of Potato-Rice (PR), Rape-Rice (RR) and Winter Fallow-Rice (WFR), using rice variety Fyou 498 as test material.The results showed that PR and RR could significantly increased the catalase activity and urease activity in the soil compared with the control WFR. The catalase activity reached the peak in the full tillering stage and full heading stage during the whole growth period of rice, and the PR mode was the highest in both stages, which were 2.78 and 2.38 mL·g-1, respectively. The urease activity of the three tillage modes was the highest at the heading stage of rice, specifically PR>RR>WFR. After the heading stage, the urease activity of the paddy soil began to decline, and the largest decline occurred from the full heading stage to the mature stage. The change trend of effective panicle and yield per unit area of rice under each treatment was PR>RR>WFR, and PR and RR models were 14.00%, 4.96%, and 7.23%,072% higher than WFR models respectively. It shows that conservation tillage (PR and RR) can improve soil enzyme activity, effective panicles and yield of rice compared with non conservation tillage(WFR).
参考文献/References:
[1]URI N D. Factors affecting the use of conservation tillage in the United States[J]. Water,Air and Soil Pollution,1999(3):621-638.
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备注/Memo
收稿日期:2022-10-06