配合施肥对狗牙根种子生产的影响

Effects of Fertilizer N-P-K Combined Application on the Seed Production of Bermudagrass

试验通过氮、磷、钾肥配比,在大田生产条件下研究配合施肥对狗牙根种子生产的影响,结果表明：（1）配合施肥对狗牙根枝条数和生殖枝数有显著影响,施肥后狗牙根的枝条数和生殖枝数分别比对照提高31.20%-51.78%和54.54%-98.21%;（2）配合施肥对狗牙根种子产量构成因子影响显著,配比100 kg/hm^2N8、0 kg/hm^2P2O5、80或160 kg/hm^2K2O能显著增加小穗数、种子数,提高结实率和千粒重;（3）配合施肥可以显著提高狗牙根种子产量,配比100 kg/hm2N、80 kg/hm^2P2O5、80或160 kg/hm^2K2O,其种子产量分别比对照提高300 kg/hm^2、264 kg/hm^2。

A fertilization experiment of N-P-K combined application in different rates had been conducted in field production conditions to study the effects of fertilizer N-P-K combined application on the bermudagrass seed production.The results indicated：（1）the fertilizer N-P-K combined application had significant effect on fertile branches and tillers which were increased by 31.20%-51.78% and 54.54%-98.21% respectively,compared with the CK;（2）The fertilizer N-P-K combined application had significant effect on the seed yield component factors,the number of spikelet and seed was increased by the treatment with 100 kg/hm^2N-80 kg/hm^2P2O5-80 or 160 kg/hm^2 K2O;（3）The bermudagrass seed yield could be increased by fertilizer N-P-K combined application significantly,the seed yield was increased by 300 kg/hm^2,264 kg/hm^2 compared with CK by the treatment with 100 kg/hm^2 N-80 kg/hm^2P2O5-80 or 160 kg/hm^2K2O.