采用土柱模拟栽培法与大田试验相结合的方法，对松嫩平原不同株型玉米的根系分布特征进行了比较。
In a soil column culture and a field experiment, the comparison of root distribution of spreading-leaf and upright-leaf maize cultivars in Songnen Plain was studied.
文中分析了紧凑型玉米群体结构的光合生产特性和株型的增产原因。
The causes of increasing yield and photosynthesis traits in canopies of erectophile-type maize are discussed. Two quantitative parameters, leaf inclination angle and …
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