不同氮源发酵的玉米秸基质对番茄育苗效果的影响

Effects of maize stem substrate fermented by different nitrogen resources and ratios on tomato seedling growth

该试验分别以烘干鸡粪、尿素和硫酸铵为氮源发酵的玉米秸基质为原料,采用玉米秸基质∶蛭石=6∶4(体积比)为育苗基质,以草炭∶蛭石=2∶1(体积比)为对照,进行春季番茄育苗试验,研究了不同氮源及配比发酵的玉米秸基质对番茄育苗效果的影响。结果表明:采用25%烘干鸡粪氮+75%化学肥料氮发酵生产的玉米秸基质,在番茄日历苗龄35 d、40d时,其幼苗平均株高与对照基质相近,平均茎粗、平均根体积、平均最大根长均高于对照;日历苗龄40 d时,番茄幼苗地上部、地下部平均单株干重均略高于对照,采用该氮源配方发酵生产的玉米秸基质可以替代草炭用于番茄育苗。

The effects of maize stem substrates produced by fermentation with different nitrogen resources and(ratios) on tomato seedling growth were studied.The substrate for tomato seedling nursing was a mixed substrate by adding the maize stem substrate to vermiculite with the ratio of 6∶4(v/v) and the contrast substrate was peat: vermiculite=2∶1(v/v).The results showed that the average stem of the tomato seedling was similar to that of the contrast,the average diameter of the stem,the average root volumes and the average biggest root lengths are all better than that of the contrast at 35 d and 40 d after sowing and the aboveground and underground dry matter accumulations of per plant were all higher than that of the contrast when using the maize stem substrate fermented by 25% drying chicken manure nitrogen +75% chemical fertilizer nitrogen to produce tomato seedling in spring.The maize stem substrate fermented by this nitrogen resource and ratio could be a substitute of peat applied to tomato seedling production.