不同施肥量对雷竹林竹笋产量及土壤养分的影响

Effects of Different Fertilizer Application Amount on Shoot Yield and Soil Nutrients in Phyllostachys praecox Forest

在冬季竹林无覆盖的条件下,采用生产上常用的竹笋专用肥,研究不同施肥量(年施肥量分别为150 kg/667 m^2、250 kg/667 m^2和350 kg/667 m^2)对雷竹笋产量和土壤养分的影响。结果表明:竹笋产量和经济收益随施肥量的增加而提高,其中以年施肥量250 kg/667 m^2的综合施肥效果最佳,肥料全年分4次施入,每次施肥量分别占总施肥量的35%、15%、15%和35%。研究建议,目标笋产量为1 000~1 500 kg/667m2的丰产竹林,年施肥量可定为240 kg/667 m^2;目标笋产量为1 500 kg/667 m^2以上的高产竹林,年施肥量可定为360 kg/667 m^2。研究结果为笋用竹林精准化施肥提供了科学依据。

The effects of different fertilizer application amounts (150 kg/667 m2 , 250 kg/667 m2 and 350 kg/667 m2 annually) on the bamboo shoot yield and soil nutrients in Phyllostachys praecox forest by applying the commonly used special fertilizer for bamboo shoots. The results showed that bamboo shoot yields and subsequently the economic benefits have grown with the increased application of fertilizers, while the annual fertilization rate at 50 kg/667 m2 had the best effect, for which fertilizers had been applied 4 times annually and the amount every time accounted for 35%, 15%, 15% and 35% of the total amount. It is suggest that the annual fertilization in the medium-yield Ph. praecox forests with the target yield at 1000 -1500 kg/667 m2 should be applied with the amount 240 kg/667 m2 while the annual amount of fertilization for high-yield Ph. praecox forests with the target yield more than 1500 kg/667 m2 should be at 350 kg/667m2.