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红壤种花生较之其它农作物所获得的经济效益要高,因此,近年来红壤上的发展很快。然而,红壤种花生也存在着若干限制产量的因子。这些限制因子可归结为酸、瘦、旱3个字。土壤酸化,就是土壤的交换性铝含量高,而交换性钙的含量低。前者对花生的结荚有抑制作用,后者则影响花生的营养生长和荚果的发育。播种期的干旱会影响花生的出苗,下针至鼓荚期的干旱,则会影响荚果的膨大与发育。土壤瘦,就是土壤中本身存在的根瘤菌极少,微量元素硼和钼非常缺乏,从而影响花生根瘤的形成和固氮能力的提高。
Red soil peanuts than other crops obtained higher economic benefits, therefore, the rapid development of red soils in recent years. However, there are several factors that limit crop yield in red soil peanuts. These limits can be attributed to acid, lean, dry word. Soil acidification, that is, the soil exchangeable aluminum content is high, while the exchange of calcium content is low. The former inhibited peanut pod, while the latter affected the vegetative growth of peanut and the development of pod. Sowing drought will affect the emergence of peanuts, the next needle to pod drum drought, it will affect pod enlargement and development. Soil is thin, there is very little rhizobium in the soil, trace elements boron and molybdenum are very scarce, thus affecting the formation of peanut nodules and nitrogen-fixing ability.