麦棉套作模式下起垄种植对棉花苗期土壤光温水及棉花生长发育的影响

摘要

Under cotton -wheat intercropping system,two treatments were designed including ridge farming and flat planting,and their effects on soil temperature,moisture,light and cotton growth were studied with spring cotton monoculture as control.The results showed that compared with flat planting,ridge farming increased the light intensity and time,raised the soil temperature of 5 -cm soil layer,regulated the soil mois-ture,promoted the early -onset and early -ripe of cotton,increased the pre -frost flower rate by 8.3 percent-age points,and increased the cotton yield and lint yield by 15.0% and 14.7% respectively.%麦棉套作下，于棉花预留行设置起垄与平作两种种植模式，以单作春棉为对照，研究其对棉行土壤温度、水分、光照变化规律和棉花生长发育的影响。结果表明，与平作相比，起垄能提高棉行光照强度，增进光照时间，提高5 cm 土壤温度，调节土壤水分，促进棉花早发早熟，提升棉花霜前花率8．3个百分点，籽棉产量提高15．0％，皮棉产量提高14．7％。