两种多年生牧草土壤营养状况的动态分析

The analysis of the soil nutrition dynamic of the two kinds of perennial forage sites

对青海省同德县牧草良种繁殖场种植的两种多年生牧草的土壤营养成分进行了分析。结果表明:2007年的土壤有机质含量均高于2006年;除104地块,多年生牧草的出苗数和产籽量随着有机质含量的增加而增加;播种前的全氮和全磷含量均大于收割后的全氮和全磷含量;质地以轻壤土为主,土壤呈碱性。

The soil nutrition components of the two kinds of perennial forage sites in Qinghai forage seed reproduction farm were analysed. The result indicate that the content of organic matter in 2007 is higher than that in 2006,except 104 plot, with the content of organic matter increase, the quantity of seed and seed yield increase, the contents of total N and P before planting is higher than after harvestry, the soil texture is emergence loan and alkaline.