种植方式和密度对旱地土壤环境和甘蓝产量的影响

Effects of Planting Methods and Densities on Soil Environment and Yield of Cabbage in Dryland

通过田间试验研究了不同种植方式和密度对旱地土壤环境及甘蓝产量的影响,结果表明,垄种地温较沟种明显增加,垄种5,10,20 cm地温分别较同一层次沟种日平均增加2.08,1.61和0.50℃,且早晚温差明显增大;整个生育期,沟种较垄种0～20 cm土壤含水量平均增加1.9%;收获时甘蓝植株性状、经济产量和水分利用效率都是垄种显著大于沟种,所有处理以种植方式为垄种、密度为82 500株/hm2的处理产量最大、水分利用效率最高。

In/he field experiment, effects of different planting methods and densities on soil environment and yield of cab- bage in dryland were studied. The results showed that soil temperature of ridge planting was significantly higher than those of fur- row planting, daily soil temperature of ridge planting in 5 cm, 10 cm and 20 cm layer was 2.08 ℃, 1.61 ℃ and 0.50 ℃ respectively higher than those of furrow planting in the same layers, and soil temperature difference in the morning and at night for ridge plant- ing was significantly higher than that of furrow planting. In whole growth season soil moisture of ridge planting for 0-20 cm layer was averagely 1.9% lower than that of furrow planting. Plant traits, economic yield and WUE of cabbage for ridge planting was significantly higher than that of furrow planting after cabbage harvest. Yield and WUE was the highest in all practices for ridge planting and the density of 82 500 plants per hectare.