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本文就五个品种小麦对土壤钼的利用和根际土壤申P、K、Mo、Cu、Fe、Zn等对小麦利用土壤钼的影响等问题进行了研究,结果表明:小麦植株含钼量变动在0.3—0.7ppm之间,总趋势是与日递减;不同植株部位Mo平均浓度,就5个品种平均位而言,以旗叶最高,麦秸最低。小麦积累Mo的速率生育期中差异很大,泗阳、宁麦、7959都有两个吸Mo速率高峰,同时出现在4月13日附近和5月12日附近,青农和百农只在5月3日出现了一个高峰。小麦60%的Mo是在最后半个月积累的,全生育期中对土壤有效Mo的最高利用率也仅3%。根际土壤中P能促进小麦对Mo的积累,相关系数r=0.7～.80(n=8),达显著或极显著水平,而根际土壤中K、Cu、Fe与小麦Mo积累呈不同显著程度的负相关,各相关程度因品种而异。体内N、P、K、Zn和Cu与Mo之间都表现极显著的正相关,r=0.571～0.822(n=39),并与Mo浓度始终保持一定比例,大量元素与Mo浓度比约为10,000,Zn约为120,Cu约为20。
In this paper, five varieties of wheat on the utilization of soil Molybdenum and rhizospheric soil application of P, K, Mo, Cu, Fe, Zn and other wheat on the use of soil Molybdenum and other issues were studied results show that: wheat plants containing molybdenum content changes In the range of 0.3-0.7ppm, the general trend is decreasing with the day; the average concentration of Mo in different plant parts is the highest in the flag leaves and the lowest in wheat straw in terms of the average of five varieties. The rate of Mo accumulation in wheat varies greatly during its growth period. Both Siyang, Ningmai and 7959 have two peak Mo sorption rates, which appear both near April 13 and May 12, with only 5 A peak appeared on the 3rd of the month. 60% of the wheat Mo accumulates in the last half month and the maximum utilization rate of soil available Mo during the whole growth period is only 3%. The rhizosphere soil P can promote the accumulation of Mo in wheat, the correlation coefficient r = 0.7 ~ .80 (n = 8), reaching significant or extremely significant level, while the accumulation of K, Cu, Fe and wheat Mo in rhizosphere soil were different Significant degree of negative correlation, the degree of correlation varies by species. There was a significant positive correlation between N, P, K, Zn, Cu and Mo in the body, r = 0.571-0.822 (n = 39) and remained constant with the concentration of Mo, 10,000, Zn is about 120 and Cu is about 20.