兴义市退化天然草地改良试验初报

Preliminary Report on Improvement of Degenerated Rangelands in Xinyi Municipality,Guizhou

研究结果表明，退化天然草地通过补播，鲜草产量每公顷提高６８％，经ｔ检验差异显著（ｐ＜００１）。施肥试验组与对照比较，各处理差异极显著（ｐ＜００１），其中每公顷施１８７５ｋｇ尿素效果最佳。刈割试验与对照比较差异极显著（ｐ＜００１），鲜草产量每公顷提高６１１％。

The Studying results indicated that through reseeding on those degenerated rangelands,the yield of fresh grass weight had gained an increase of 68%,the differences then showing at high significance level (p<001)When the fertilizer application trial group was in contrast with the control,the differences between each treatment group would be clearly showing their highest level statistically (p<001)From among,the effect of urea treatment (1875 kg/hm2) was shown up to the highest. In the next place,when the cutting treatment was compared with the control,the statistical difference would be manifested at the top level statistically with p<001,that means,the fresh weight increase was gained in a percentage of 611%。