One of the key factors influencing the output and quality of the Gynostemma pentaphyllum is the planting density.
选择合理栽植密度是提高绞股蓝产量和质量的技术措施之一。
The results show that the average value of tracheid form can not be affected by the planting density through variance analysis .
结果表明，造林密度对马尾松管胞形态总平均值影响不大，方差分析不显著；
Walnut tree is bigger, the planting density is low, such as alfalfa, ryegrass, dwarf crops, grass to care, to promote the production of fertilizer.
核桃树体较大，定植密度较低，如紫花苜蓿、黑麦草、矮秆农作物等，以草养地，以肥促产。
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