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本文用正交试验方法,通过去杂、施肥、补播、禁牧综合措施对因杂草严重侵入而导致建植草种过早丧失生产性能的“黑麦草—白三叶”人工草地进行了复壮试验。结果表明,在当地条件下,去杂和施肥是两项最有效的复壮措施,短期内即可使牧草产量分别提高1.29倍和66.6%;第5个处理(即50%去杂,每公顷施用尿素75公斤、磷二铵120公斤,每公顷补播黑麦草种籽9公斤、白三叶草种籽1.875公斤,禁牧三个月)为最佳组合。在第一次刈割中,其产量提高3.12倍,黑麦草和白三叶草的盖度分别提高42%和30%,而杂草比例却下降55.1%。
In this paper, the orthogonal experiment was carried out to rejuvenate the “ryegrass-white clover” artificial grassland caused by the serious invasion of weeds and the loss of productive performance due to the early weeds, fertilization, supplement sowing and grazing prohibition comprehensive measures test. The results showed that under the local conditions, de-composing and fertilizing were the two most effective rejuvenation measures, which could increase the pasture production by 1.29 times and 66.6% respectively in the short term. The fifth treatment (50% de-compilation, application per hectare) 75 kg of urea, 120 kg of phosphorus diammonium, 9 kg of ryegrass seeds per hectare, 1.875 kg of white clover seeds, and three months of no-grazing). In the first mowing, the yield increased by 3.12 times, the cover of ryegrass and white clover increased by 42% and 30% respectively, while the weed proportion decreased by 55.1%.