立竹密度对方竹林笋产量的影响研究

Effect of Bamboo Density on Shoot Yield of Chimonobambusa Pachystachs Forest

为研究不同立竹密度对方竹林笋产量的影响,设置了5个密度水平,分别为处理1:4.50万株/hm^(2),处理2:5.25万株/hm^(2),处理3:6.00万株/hm^(2),处理4:6.75万株/hm^(2),处理5:7.5万株/hm^(2),调查了方竹林出笋天数、不同阶段出笋比例、笋产量和新竹生长状况的差异。结果表明:随着立竹密度的增加,出笋天数、前期出笋比例和发笋个数呈逐渐增加的趋势,中期出笋比例和笋产量呈先升高后降低的趋势,在密度为6.75万株/hm^(2)时的产量最高,因此合理的立竹密度能显著提高笋产量,在立竹密度为6.75万株/hm^(2)时最适合方竹林达到高产。

In order to study the effects of different bamboo density on shoot yield of Chimonobambusa Pachystachs forest,five density levels were set up,which were 1:45000 plants/hm^(2),2:52500 plants/hm^(2),3:60000 plants/hm^(2),4:67500 plants/hm^(2) and 5:75000 plants/hm^(2),respectively.The differences in the number of bamboo shoots,the proportion of bamboo shoots at different stages,the yield of bamboo shoots and the growth status of new bamboo were investigated.The results showed that with the increase of bamboo density,the number of bamboo shoots,the proportion of early bamboo shoots and the number of bamboo shoots increased gradually.The proportion of middle bamboo shoots and the yield of bamboo shoots increased first and then decreased.The yield was the highest when the density was 67,500 plants/hm^(2).Therefore,reasonable bamboo density can significantly increase the yield of bamboo shoots,and it is most suitable for the high yield of Chimonobambusa Pachystachs forest when the density is 67500 plants/hm^(2).