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首页> 外文期刊>Soil & Tillage Research >Effects of planting patterns on rainwater use efficiency and potato tuber yield in seasonally arid areas of southwestern China
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Effects of planting patterns on rainwater use efficiency and potato tuber yield in seasonally arid areas of southwestern China

机译：种植模式对中国西南部季节性干旱地区雨水利用效率和土豆块茎产量的影响

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China is the top potato producing country in the world, and Yunnan Province (in Southwest China) makes a significant contribution (10.1 %) to the total production. The uneven rainfall distribution causes seasonal spring drought in the region. To resolve this issue, we evaluated the effects of cultivation modes on the soil temperature, soil water content, and potato yield. Four cultivation modes were evaluated: A1, flat-planting at sowing, double ridges after emergence; A2, double ridges in plastic film covered with soil, potato planted along the larger ridge side; A3, double ridges in plastic film mulching covered in soil; and A4-control (CK), double ridges, consisting of two different plastic film covering modes (A2, A3) and two covering modes without a plastic film (A1, A4). The field experiments were conducted for three years (2014, 2015, and 2016) in three regions (S1, S2, and S3) of Yunnan in southwestern China. The results showed that the effects of cultivation patterns on the soil temperature and humidity were not the same in the three ecological regions. Before mound closure, compared to the CK treatment, higher soil temperature was observed at the S1 and S2 regions using the A3 mode, which was 5.15 degrees C and 3.4 degrees C, respectively. The soil moisture was 4 % (S1), 50.8 % (S2), and 10.0 % (S3) higher with the A2 mode than under the CK mode in the three ecological zones, but the soil moisture was 27.1 % lower with the A3 mode than that with the CK mode at S2. Multiple regression analysis revealed the optimum surface soil temperature (18.9-20.8 degrees C) and water content (58.6 %-70.4 %) for seedling emergence and potato tuber yield. The emergence, tuber growth, and yield were mainly related to the soil temperature and soil water content at S1 and S2, respectively, while at S3, both factors contributed significantly. Overall yield differed significantly at the cultivation sites, but the average yield was similar in each year at each site. The highest stable potato yield occurred with the A3 mode at S1, and with the A2 mode at S2 and S3. Our research provides suitable methods for potato production in different rain-fed and seasonally arid areas.
机译：中国是世界上土豆产区，云南省（中国西南部）为总产量提供了重大贡献（10.1％）。不均匀的降雨分布导致该地区的季节性春季干旱。为了解决这个问题，我们评估了培养模式对土壤温度，土壤含水量和马铃薯产量的影响。评估四种培养模式：A1，播种，出苗后的双脊; A2，在覆盖着土壤覆盖的塑料薄膜的双脊，沿着较大的脊侧种植的土豆; A3，在土壤中覆盖的塑料薄膜覆盖的双脊; A4-Control（CK），双脊，由两种不同的塑料薄膜覆盖模式（A2，A3）和两个没有塑料薄膜（A1，A4）的覆盖方式组成。在中国西南部的云南三个地区（S1，S2和S3）进行了三年（2014年，2015年和2016年）的实地实验。结果表明，三个生态区域中培养模式对土壤温度和湿度的影响不尽。在闭锁之前，与CK处理相比，使用A3模式在S1和S2区观察到更高的土壤温度，分别为5.15℃和3.4℃。在三种生态区的CK模式下，土壤水分为4％（S1），50.8％（S2）和10.0％（S3），但通过A3模式，土壤水分降低了27.1％比在S2的CK模式。多元回归分析显示出幼苗出苗和马铃薯块茎产量的最佳表面土壤温度（18.9-20.8℃）和水含量（58.6％-70.4％）。出苗，块糖生长和产量分别主要与S1和S2的土壤温度和土壤含水量相关，而在S3时，这两个因素都显着贡献。培养场所的总体产量显着差异，但每年的平均产量在每个场地每年相似。在S1的A3模式下，在S2和S2和S3处发生最高稳定的马铃薯产率。我们的研究为不同雨水和季节性干旱地区的土豆生产提供了合适的方法。

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