施肥量和收割频率对幼龄胶园间作的坚尼草产量的影响

• 作 者: S.D.Dissanayake 崔元芳
• 出 处: 热带作物译丛
• 发表日期: 1987年04期
• 关键词: 坚尼草 干物质产量 胶园 于坚 胶树 牧草 粗蛋白质 氮肥 频率 橡胶园

在1龄胶树行间间作了两种生态型坚尼草(坚尼A和B),试验进行了1年半。试验结果表明,坚尼A的干物质产量高于坚尼B的,但两者的产量都较低。每年施氮肥从90公斤/公顷增至360公斤/公顷的干物质产量仅提高20％左右。因此,增施如此大量的氮肥是不经济的。收割频率以30天一次为宜,两种牧草的干物质产量和粗蛋白质含量都是每隔30天收割一次的最高。

Two ecotype Kenaf (Kenii A and B) were made between the first instar gum rows and the experiment was conducted for a year and a half. The results showed that Keni A had higher dry matter yields than Kenii B, but both had lower yields. The annual dry matter production of nitrogen fertilizer from 90 kg / ha to 360 kg / ha is only increased by about 20%. Therefore, it is uneconomical to apply such a large amount of nitrogen fertilizer. Harvesting frequency of 30 days is appropriate, the two dry grass yield and crude protein content are harvested once every 30 days the highest.