摘要
通过室内模拟实验,利用析因设计法研究了魔芋超强吸水剂(KSAP)对土壤水分和狗牙根生长的影响。结果表明:魔芋超强吸水剂用量0.30%、粒径0.80 mm,以表层喷洒的方式分别加入沙、红壤和棕壤中,有效含水量分别增加32.7%、18.1%和24.3%。经魔芋超强吸水剂处理后,狗牙根发芽率平均提高27.5%,盆栽蒸散量下降,魔芋超强吸水剂用量为0.20%,在限量供水条件下可以提高狗牙根的叶片含水量及相对含水量。
According to the laboratory experiments, the effect of Konjac Super Absorbent Potymer（KSAP）on soil water content is studied by using factorial designed experiment. Results show that the effect on water preservation in soil is significant when different addition, different dosage and particle diameter of KSAP is added to the soil; while the frequeney of irrigation on water preservation of KSAP is not significant. The effective water content in sand, red soil and brown soil is increased by 32. 7 %, 18.1% and 24. 3% when KSAP with 0. 30 % dosage and 0.80mm particle diameter is sprayed to surface. The sprouting percentage of the Cynodon L. seeds treated with KSAP increases by 27. 5% and the Evapotranspiration of the lawn decreases. Under limited water supply eondition, KSAP with 0. 20% dosage can improve Cynodon leaf water content and relative water content.
出处
《节水灌溉》
北大核心
2009年第9期8-11,16,共5页
Water Saving Irrigation
基金
湖北省科技厅项目(2006AA201C42)
湖北省教育厅科技创新项目(J200614002)
关键词
魔芋超强吸水剂
土壤
保水性
有效含水量
狗牙根
Konjac super absorbent polymer
soil
water preservation
effective water
Cynodon L.
