种植密度与施肥对巨菌草农艺性状和生产性能的影响

以巨菌草为试验草种，通过研究种植密度与施肥对其农艺性状和生产性能的影响，探明高产栽培技术，为其大面积推广应用提供科学依据。结果表明，随种植密度增大，巨菌草分蘖数、茎粗减小，株高、鲜草产量先升后降，适宜的种植密度为株行距80 cm×60 cm （20 833丛·hm^-2）；以有机肥或废菌料作基肥，适宜施肥量为3 000 kg·hm^-2；在基肥基础上进行尿素或复合肥追肥，适宜追肥量为750 kg·hm^-2。

Effets of Planting Density and Fertilization on the Agronomic Traits and Production Performance of Pennisetum spp.

Through studying the effects of planting density and fertilization on the agronomic traits and production performance of of Pennisetum spp.,the high yield cultivation technology was explored to provide scientific basis for its large-scale popularization and application. The results indicated that the optimum planting density was 20 833 plants·hm^-2(row spacing 80 cm and plant spacing 60 cm). When organic fertilizer or used mushroom substrate was used as basic fertilizer,the optimal fertilization rate was 3 000 kg·hm^-2. When urea or compound fertilizer was used as topdressing based on basic fertilizer,the optimal topdressing fertilization rate was 750 kg·hm^-2.