Methods of soilauger and pot experiment were used to research vertical root distributions and drought resistance of main planting tree species in the Weibei loess plateau.
采用土钻法和盆栽试验研究了渭北地区主要造林树种的垂直根系分布特征及其抗旱性。
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In this paper, root samples of winter wheat and spring maize under intercropping were taken with large-bore soilauger, and the dynamics of their spatiotemporal distribution were studied.
An analysis related to various kinds of soil cutting by earth auger, this paper puts forward that running speed of frill should be faster than critical speed so as to increase the efficiency of drill.