配合施肥对狗牙根种子生产的影响

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/hm2N、80 kg/hm2P2O5、80或160 kg/hm2 K2O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/hm2 N、80 kg/hm2 P2O5、80或160 kg/hm2K2O,其种子产量分别比对照提高300 kg/hm2、264 kg/hm2.

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

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/hm2N-80 kg/hm2P2O5-80 or 160 kg/hm2 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/hm2,264 kg/hm2 compared with CK by the treatment with 100 kg/hm2 N-80 kg/hm2P2O5-80 or 160 kg/hm2K2O.