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多年生黑麦草(Lolium perenne)草地连续16年施用猪粪尿或牛粪尿后,其牧草产量与施用的可溶性氮量呈典犁特征曲线,猪粪廉供给的 P 比牛粪尿多,而供给的 K 比牛粪尿少,牧草 P 和 K 的含量与施用量相关联。牧草含 K 量在施猪粪尿最高量和全部施牛粪尿处理时下降,这也许是由于 K 和 Na 的拮抗作用或草地植物组成发生变化的缘故。高厩肥施量的处理使多年生黑麦草在草地中的比例减少。猪粪尿有酸化土壤的作用,土壤 pH 值只有在最高施量的处理并超过了施化肥的处理时降低。但施牛粪尿最高的处理土壤 pH 值仍保持原来的水平(6.3)。在土壤上层15cm 内,尤其当最高施量(200m~3/公顷/年)时,发现猪粪尿对 P 和牛粪尿对 K 的积聚现象。
Perennial ryegrass (Lolium perenne) grassland after 16 consecutive years of pig manure or cow manure application, the pasture production and application of soluble nitrogen showed a typical plow characteristic curve, pig manure supply P than cow manure urine, and supply K was less than cow manure, and the contents of P and K were related to the application rate. The K content of forage declined at the highest excretion rate of pig manure and all cattle manure excretion, which may be due to the antagonism of K and Na or the change of grass plant composition. The handling of high-manure fertilizers reduced the proportion of perennial ryegrass in the grass. Pig manure has the effect of acidified soils, and the pH of the soil decreases only when it is treated at the highest rate and exceeds the rate at which fertilizer is applied. However, the pH value of the treated soil with the highest manure excrement remained the same (6.3). In the upper soil layer 15cm, especially when the highest amount of application (200m ~ 3 / ha / year), found pig manure urine P and cattle excretion of urine K accumulation phenomenon.