不同施肥处理对郁闭杨树林地麦冬生长的影响

Effect of different fertilization treatments on the growth of Ophiopogon japonicus in the woodland of poplar closed forest

在郁闭杨树林地间作麦冬,研究不同施肥处理对麦冬生长的影响。结果表明:施肥对2年生麦冬的地上部分鲜重及分蘖株数的影响不大,但对麦冬块根生长有极显著促进作用。3种施肥处理对比不施肥的对照,块根鲜重分别增加了179%、196%、342%,块根干重分别增加了170%、177%、294%。在复合肥用量不变的情况下,增加鸡粪用量到15 000 kg/hm^2,麦冬块根鲜、干重分别为2 861 kg/hm^2、1 408 kg/hm^2,相比鸡粪用量3 750 kg/hm^2处理,块根鲜、干重分别增加了58.8%、46.1%;相比鸡粪用量7 500 kg/hm^2处理,块根鲜、干重分别增加了49.2%、42.5%。施肥还有助于提高麦冬块根的外观品质。

Intercropping Ophiopogon japonicus in the woodland of the poplar closed forest,the effect of different fertilization treatments on the growth of Ophiopogon japonicus was studied. The results showed that,fertilization had little effect on the fresh weight of shoot and tiller number for the 2 years old Ophiopogon japonicus,but fertilization had a very significant effect on the growth of the tuberous root. Under three fertilization treatments compared with no fertilizer treatment,the fresh weights of the tuberous roots increased by 179%,196%,342% and the dry weights of the tuberous roots increased by 170%,177% and 294%. In case of constant compound fertilizer dosage,increasing the chicken manure dosage to 15 000 kg / hm^2,the fresh and dry weight of tuberous roots were 2 861 kg/hm^2 and 1 408 kg / hm^2,compared with the treatment of chicken manure dosage of 3 750 kg / hm^2,the fresh and dry weights of tuberous roots increased by 58. 8%and 46. 1%,and compared with the treatment of chicken manure dosage of 7 500 kg / hm^2,the fresh and dry weights of tuberous roots increased by 49. 2% and 42. 5%. Not only that,the fertilization also improved the appearance quality of the tuberous roots of Ophiopogon japonicus.