Study on Root Growth Characteristics of Wheat Maize Intercropping under Border Furrow Irrigation Pattern
In order to investigate the distribution characteristics of crop root growth and its influence on yield under wheat-to-corn intercropping and border irrigation water pattern,a comparative study was conducted between conventional intercropping and border irrigation pattern.The results showed that the root growth and development of furrow irrigation corn were stimulated under water potential gradient because of the absence of irrigation in the early stage,and the depth of rooting was obviously greater than that under furrow irrigation corn.The dry mass density of 0～60 cm vertical root under conventional border irrigation was significantly higher than that under border furrow irrigation,and the root system was more developed.In the same period,the root amount of furrow irrigation corn was significantly greater than that of border irrigation corn,and the mean root amount at 0～25 cm at jointing stage and tasseling stage was 22.76%and 16.13%higher.The horizontal root dry weight of wheat under conventional border irrigation was significantly higher than that under border furrow irrigation,and the difference decreased as the growth period of corn under furrow irrigation was prolonged.Wheat yield under border furrow irrigation was 9.92%higher than that under border furrow irrigation,influenced by the root growth of corn.The yield of corn under furrow irrigation was 13.49%higher than that under conventional border irrigation due to the root growth compensation effect.
万方数据
维普
