兴义市退化天然草地改良试验初报

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％。

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

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%。