论文部分内容阅读
本文论述了在缺钼的白浆土上施用钼肥的良好效果(供试土壤有效钼含量为87PPb)。它首先促进了大豆地上地下部分的生长发育。使光合生产率和叶面积提高30％左右,使根瘤鲜重和固氮酶活性增加二陪到十倍以上,其次,表现出显著的增产效果,平均每亩增产大豆4.25公斤,增产9.26％。从钼肥施用方法看,浸种效果不稳定,花期叶面喷钼效果较突出,每亩增产10.7—22.2公斤,较对照提高11.3—26.0％,尽管在试验地连续四年喷施钼肥,未发现钼的明显积累效应,故当前栽培大豆施用钼肥仍是一项良好的增产措施。
This article describes the good effect of applying molybdenum fertilizer on molybdenum-depleted albic soil (available soil active molybdenum content of 87 PPb). It first promoted the growth and development of underground parts of soybean. So that photosynthetic productivity and leaf area increased by about 30%, so that the fresh weight of nodules and nitrogenase activity increased two times escort to more than ten times, followed by significant yield increase, the average yield of 4.25 kg of soybean per acre, an increase of 9.26%. From the perspective of application of molybdenum fertilizer, the effect of soaking seeds is unstable, and the molybdenum effect at the flowering foliage is more prominent, with an increase of 10.7-22.2 kg per mu, which is 11.3-26.0% higher than that of the control. Although molybdenum fertilizer is sprayed for four consecutive years in experimental sites, Found obvious accumulation of molybdenum effect, so the current cultivation of soybean fertilizer application of molybdenum is still a good yield measures.