灌溉对高羊茅种子产量和质量的影响

Effects of Irrigation on Seed Yield and Quality of Tall Fescue.

以猎狗 5高羊茅为材料 ,研究了在施肥量相同的情况下不同的灌水量和灌水时间对高羊茅种子产量和质量的影响。结果表明 ,从返青到种子收获 ,灌 4次水 (返青期、拔节期、抽穗期和灌浆期灌水 ,每次灌水量为 90 0m3/hm2 )生殖枝 /m2 最高 ,小穗数 /生殖枝、小花数 /小穗、种子数 /小穗接近最高 ;潜在种子产量、表现种子产量和实际种子产量最高。在种子发育早期 (盛花期后 7d) ,灌 4次水种子标准发芽率最高 ,老化发芽率最高 ,种苗芽长最长 ,芽重最重。种子发育后期 。

The effects of different amount of irrigation and time of irrigation on seed yield and quality of tall fescue hundog 5(Festuca arundinacea cv. Hundog5) under the same rate of fertilizer applied were studied. The results showed that from returning up to harvest, the fertile tillers/m\+2 were the highest and spikelets per fertile tiller, the florets per spikelet and seeds per spikelet were near to the highest number under irrigating four times(returning up period, jointing period, tasseling period and grouting period),and its potential seed yield, showing seed yield and actual seed yield were the highest. In seed growth early stage(the seventh day after perk anthesis),standard germination, accelerated aging germination, seedling length and seedling weight under irrigating four times were the highest.In seed growth late stage, the effects of irrigation on the seed quality of tall fescue were not significant.