1. 秸秆局部覆盖种植对土壤水热及旱地马铃薯产量的影响.
- Author
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马菊花 and 黄彩霞
- Abstract
Straw mulch planting is a new green and sustainable dry farming technology. In order to fully avoid the influence of low temperature effect of straw mulching on crop emergence and even yield, the planting mode of partial straw mulching was adopted to study and determine the planting mode suitable for increasing yield and economic benefit of dry land planting potatoes. In Dingxi City, Gansu Province, compared with the traditional flat planting without mulching (CK), the effects of high ridge with partial straw mulching (RM), flat planting with partial straw mulching (FM) and flat planting with partial plastic film mulching (PM) on soil moisture and temperature distribution, and potato yield were studied. Compared with CK, the average soil water storage by mulching in 0-180 cm soil layer was increased by 6.55%-16.81%, with an average increase of 12.25%. The soil moisture conservation effect with mulching was as RM> FM>PM. Compared with CK, PM increased the average soil temperature in 0- 25 cm soil layer by 1.24℃ during the whole growth period. The cooling effect of straw mulching of FM was higher than that of RM, and FM and RM reduced the average soil temperature by 1.82 and 1.25℃, respectively. Compared with CK, mulching significantly improved potato yield and water use efficiency (WUE), increasing yield by 20.55%- 22.65% and WUE by 23.25%- 26.67% . Therefore, high ridge with partial straw mulching (RM) is a planting pattern that could increase yield and improve economic benefit and is suitable for the green and sustainable development of dryland agriculture in Northwest China. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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