施用鸡粪对特高多花黑麦草 SPAD 值、干草产量和蛋白质含量的影响

研究在大田条件下,施用鸡粪对特高多花黑麦草叶片SPAD值(soil plant analysis development)、干草产量和粗蛋白质含量的影响。试验设置了3个处理组,分别为:对照组(不施肥)、低氮处理组(施鸡粪13t/hm2,即氮130.77kg/hm2)、高氮处理组(施鸡粪26t/hm2,即氮261.54kg/hm2)。分别测定黑麦草拔节期、孕穗期、开花期、成熟期叶片SPAD值、干草产量和粗蛋白质。分析不同生育时期SPAD值与干草产量和粗蛋白质含量的相关性。结果表明,施用鸡粪可以显著提高孕穗期和开花期黑麦草叶片SPAD、开花期和成熟期干草产量、开花期粗蛋白质含量。相关分析表明,在各生育期黑麦草叶片SPAD值与干草产量和粗蛋白质含量均显著正相关。

Effect of chicken manure application on SPAD value,hay yield and protein content of Lolium multiflorum cv.Tetragold

The effect of chicken manure application on the chlorophyll content (SPAD value),hay yield and crude protein content of Lolium multiflorum cv.Tetragold were evaluated through a field trail.The experi-ment included 3 treatments with different nitrogen levels (0,130.77 and 261.54 kg N/ha)with 3 replicates. The SPAD value was determined by using a Chlorophyll meter at different growth stages.Hay yield and crude protein content were determined simultaneously.Correlation between SPAD value and the other indexes at dif-ferent growth stages were also calculated.Chicken manure application significantly improved SPAD value at the booting and flowering stages,hay yield at the flowering and maturing stages and crude protein content at flowering.There were significant positive correlations between SPAD value and hay yield,and crude protein content at all four stages.