7种豆科牧草在宁夏广夏葡葡园的适应性及其对土壤有机质的影响

为提高土壤肥力、改善生态条件,在宁夏广夏葡萄园中进行牧草种植筛选试验.结果表明:种植豆科牧草能降低园中土壤容质量,增加田间持水量,提高土壤有机质.7种豆科牧草在干旱沙壤条件下,除红三叶和杂三叶生长情况表现较差外,其余表现出较强的适应性.适宜种植的牧草为紫花苜蓿、普通红豆草、沙打旺、百脉根和白花草木樨,其中对葡萄园土壤有机质影响较好的为紫花苜蓿和白花草木樨,适应性较好的为沙打旺,适应速度较快的为白花草木樨.

Adaptability of seven leguminous forages and improvement to soil organic matter content in Guangxia grapery

In order to increase soil fertility,and to improve ecological environment,screen experimentation of planting different leguminous forages had been taken in Guangxia grapery.The results showed that study of planting distinction in Yuquanying plantation can be medicated: planting seven leguminous grass in the open air,except the low harvest of grass,they grew better though lack of water,and showed great adaptability but red clover and alsike clover.At the same time,they can reduce the soil bulk density;increase the soil organic matter and holding water capacity.The environment is suitable for the growth of alfalfa,sainfion,erect milkvetch,birdsfoot trefoil and white sweetclover.Alfalfa and white sweetclover can highly improve the soil organic matter of the plantation.Erect milkvetch has a higher adaptability.white sweetclover is speedier in adaptation.