首页>
美国卫生研究院文献>Scientific Reports
>Effect of Different Mulches under Rainfall Concentration System on Corn Production in the Semi-arid Areas of the Loess Plateau
【2h】
Effect of Different Mulches under Rainfall Concentration System on Corn Production in the Semi-arid Areas of the Loess Plateau
The ridge and furrow farming system for rainfall concentration (RC) has gradually been popularized to improve the water availability for crops and to increase the water use efficiency (WUE), thereby stabilizing high yields. In the RC system, plastic-covered ridges are rainfall harvesting zones and furrows are planting zones. In this study, we optimized the mulching patterns for RC planting to mitigate the risks of drought during crop production in semi-arid agricultural areas. We conducted a four-year field study to determine the effects on corn production of mulching with 0.08-mm plastic film, maize straw, 8% biodegradable film, liquid film, bare furrow, and conventional flat (CF) farming. We found that RC significantly increased (P > 0.05) the soil moisture storage in the top 0–100 cm layer and the topsoil temperature (0–10 cm) during the corn-growing season. Combining RC with mulching further improved the rain-harvesting, moisture-retaining, and yield-increasing effects in furrows. Compared with CF, the four-year average yield increased by 1497.1 kg ha–1 to 2937.3 kg ha–1 using RC with mulch treatments and the WUE increased by 2.3 kg ha–1 mm–1 to 5.1 kg ha–1 mm–1.
展开▼
机译：用于降雨集中的垄沟耕作系统（RC）已逐渐普及，以提高农作物的水分利用率并提高水分利用效率（WUE），从而稳定了高产。在RC系统中，塑料覆盖的山脊是降雨收获区，犁沟是种植区。在这项研究中，我们优化了RC种植的覆盖模式，以减轻半干旱农业地区作物生产过程中的干旱风险。我们进行了为期四年的田间研究，以确定使用0.08毫米塑料薄膜，玉米秸秆，8％可生物降解的薄膜，液膜，裸露的犁沟和常规平板（CF）耕作对覆盖地玉米生产的影响。我们发现在玉米生长期，RC显着增加（P> 0.05）顶部0–100 topcm层土壤水分和表土温度（0–10）cm）。 RC和覆盖物的结合进一步改善了犁沟的集雨，保水和增产效果。与CF相比，使用RC覆盖处理的四年平均产量增加1497.1 kg ha -1 至2937.3 kg ha -1 ，WUE增加2.3 kg ha –1 mm –1 至5.1 kg ha –1 mm –1 。
展开▼
