[1]Liu Qing,Ma Jiantao,Han Fanxiang,et al.Effects of Different Mulching Materials on Soil Moisture and Water Consumption of Potato in Dryland[J].Research of Soil and Water Conservation,2023,30(06):197-205.[doi:10.13869/j.cnki.rswc.2023.06.021]
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Effects of Different Mulching Materials on Soil Moisture and Water Consumption of Potato in Dryland
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 06
Page number:
197-205
Column:
Public date:
2023-10-10
- Title:
- Effects of Different Mulching Materials on Soil Moisture and Water Consumption of Potato in Dryland
- Keywords:
- potato; plastic film mulching; straw mulching; soil moisture; water consumption characteristics
- CLC:
- S532; S152.7
- DOI:
- 10.13869/j.cnki.rswc.2023.06.021
- Abstract:
- [Objective] The aims of this study are to clarify the effects of different mulching materials on soil moisture and water consumption of potato in the semi-arid area of Northwest China, and to seek the best planting measures for preserving soil moisture, suppressing evaporation, and reducing farmland pollution in dry area. [Methods] Four mulching planting modes were set in 2021: biodegradable mulching(PM1), PE mulching(PM2), straw strip mulching(SM1)and crushed straw mulching on the whole ground(SM2). The traditional bare land planting without mulching(CK)was used as a control to study the effects of different mulching materials on soil moisture, water consumption and yield of dryland potato. [Results] The soil moisture content during the whole growth period under all the mulching significantly increased by 5.7%～9.7% compared with CK, and under the PM1 and PM2 treatments, the moisture content had the largest increase during starch accumulation stage, while under the SM1 and SM2 treatments the content had the largest increase in the tuber expansion stage. As for the moisture content in soil layers, the PM1 and SM1 treatments had the largest increase in 120—180 cm soil layer, while the PM2 and SM2 treatments had the largest increase in 0—60 cm soil layer. All the mulching significantly reduced the water consumption of potato during the whole growth period by 5.1%～11.2%, with the largest reduction under the PM1 treatment and the smallest reduction under the SM1 treatment. Compared with CK, plastic film mulching significantly reduced the water consumption in early growth periods(from sowing stage to tuber formation stage)and middle growth periods(from tuber formation stage to starch accumulation stage), but increased the water consumption in late growth periods(from starch accumulation stage to maturation stage), while the straw mulching reduced the water consumption mainly in early growth periods and late growth periods, but increased the water consumption in middle growth periods. Mulching could increase fresh potato yield by 5.0%～17.1%, dry potato yield by 7.0%～19.0% and water use efficiency by 15.0%～33.7%, and the increase followed the order: SM2>SM1 under straw mulching and PM2>PM1 in plastic film mulching. [Conclusion] Straw mulching is similar to plastic film mulching in increasing soil moisture and yield, and the straw strip mulching is easy to operate, so it can be widely used in dryland potato production.
- References:
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Last Update:
2023-10-10