论文部分内容阅读
在马来亚,除海成腐殖质潜育土(如雪兰莪土系)和由碱性岩衍生的某些土壤(如关丹土系)外,大部分土壤不够肥沃。但已知沿海土壤上的油棕产量较高,其他生态因子与沿海相似的其他各类土壤上的油棕则产量较低,这就证明了后一类土壤肥力不足。对油棕所需的主要元素已进行过多次研究,但对硼却很少注意研究。在马来亚,对种植在有机土上的油棕进行的一个微量元素试验表明,施硼两年后产量显著增加,每年单株增产果穗25.5公斤。在马来亚油棕园,经常可以看到叶片呈刺刀状、小
In Malaya, most of the soil is not fertile except for sea-forming humus-grounded soil (such as Selangor) and some soils derived from alkaline rocks (such as the Kuantan soil system). However, it is known that the yield of oil palm on coastal soils is higher, and that of oil palm on other types of soils which have other ecological factors similar to coastal areas is lower, which proves that the latter type of soil fertility is insufficient. Many studies have been conducted on the major elements required for oil palm, but little attention has been paid to boron. In Malaya, a trace element test of oil palm grown on organic soil showed a significant increase in output two years after application of boron, yielding 25.5 kg of fruit per plant per year. In Malayan Oil Palm, you can often see the leaves are bayonet-shaped and small