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在河南省惠楼山药种植区人工设置P全虚、P全实、P上实下虚和P上虚下实4种土壤容重构型,探讨不同容重构型对山药形态和产量的影响。结果表明:P全实山药长宽比(RLW)和形状系数(SI)最小,多呈不规则短棒状或掌状;P全虚山药RLW和SI最大,多呈规则的细棒状;P上虚下实和P上实下虚多为弯曲棒状。P全实山药分维(D)和平均宽度(B)最大,空间填充度大;P全虚山药填充度仅次于P全实;其他构型的山药空间填充度较小。P全实山药分叉比(BR)最大(41.67%),畸形山药多;P全虚山药BR最小(4.76%),商品性能最好。P全虚山药株重最大,平均为233.67 g株-1;P全实山药株重最小,仅为132.23 g株-1。随着剖面中紧实土层的不断减少,山药形状越规则,商品性越好,产量越高。
In the Huifu yam planting area of Henan Province, four kinds of soil bulk density configurations were set up, including P-emptying, P-filling, P-filling and P-filling, and the effects of different bulk density on the morphology and yield of yam . The results showed that the ratio of RLW to SI was the smallest among all the yams, most of them were irregularly short rods or palms. Under the real and P on the virtual is mostly bent rod-shaped. P is full of yam fractal dimension (D) and the average width (B) the largest, large space filling; P all yam filling second only to P full; other configurations yam space filling smaller. P full real Yam ratio (BR) the largest (41.67%), deformed yam and more; P all the Yam BR the smallest (4.76%), the best product performance. P all the yam the largest weight, an average of 233.67 g -1; P the whole yam minimum weight, only 132.23 g -1. With the continuous reduction of compacted soil in the profile, the more regular the shape of the yam, the better the product, the higher the yield.