This experiment was carried in a wheat field with different water treatments under sprinkling irrigation conditions. Soil samples were obtained from each point under four layers of 0~10cm, 10~20cm, 20~40cm and 40~60cm. Soil water content was measured. The classical statistics was applied to analyze the data, and the results indicated that the 10~20 cm layer was affected most by rainfall and evapotranspiration. Further more, Semivariance analysis found that the difference of spatial correlation existed among different treatments with the same layer or different layers with the same treatment, and that effect of sprinkling irrigation on spatial correlation of soil moisture existed. In addition, when comparing the same layers’ range with different treatmented, range tended to increase and water was more uniformly distributed in the soil as the irrigating amount increased. These results showed some merits in increasing water use efficient and precision agriculture.
GAO Lu, CHEN Su ying, HU Chun sheng, HUO Xi liang
. A Study on Spatial Variability of Soil Moisture in Wheat Field Under Sprinkling Irrigation Condition[J]. PROGRESS IN GEOGRAPHY, 2002
, 21(6)
: 609
-615
.
DOI: 10.11820/dlkxjz.2002.06.011
[1] 李毅,门旗,罗英.土壤水分空间变异性对灌溉决策的影响研究[J].干旱地区农业研究,2000,18(2):80-85.
[2] 龚元石,廖超子,李保国.土壤含水量和容重的空间变异及其分形特征[J].土壤学报,1998,35(1):10-15.
[3] 李小昱,雷廷武,王为.农田土壤特性的空间变异性及K ring ing估值法[J].西北农业大学学报,2000,28(6):30-35.
[4] 李子忠,龚元石.农田土壤水分和电导率空间变异性及确定其采样数的方法[J].中国农业大学学报,2000,5(5):59-66.
[5] 李哈滨,王政权,王庆成.空间异质性定量研究理论与方法[J].应用生态学报,1998,9(6):651-657.
[6] 胡克林,李保国,林启美等.农田土壤养分的空间变异性特征[J].农业工程学报,1999,15(3):33-38.
[7] Zhang R enduo,Geo rge F V ance,Step hen D M iller.M icro-Sp atial variab ility of so il n itrate fo llow ing n itrogen fertilization and d rip irrigation[J].W a ter,A ir,and S oil P ollu tion,1999,116:605-619.
[8] 许迪,R SCHM ICL.田间土壤特性的空间相关结构分析及其分布描述[J].灌溉排水,1996,15(4):16-20.
[9] 张建辉,何毓蓉,唐时嘉.四川丘陵区土壤湿度的空间变异分析[J].土壤通报,1996,27(2):61-62.
[10] A llaire2leung S E,W u L,M itchell J P et al.N itrate leach ing and so il n itrate con ten t as affected by irrigation un ifo rm ity in a carro t field[J].A g ricu ltu ra l W a ter M anag em en t,2001,48:37-50.
