【摘要】 为选择适合无土栽培番茄生长的基质配方,运用荷兰进口设备进行番茄无土栽培试验,以草炭、蛭石、珍珠岩和砂子为基质,采用不同的混配比例,比较不同基质对番茄氮养分变化的影响。结果表明,在不同的配方基质处理下,番茄植株从基质中吸收的氮元素含量各不相同。从总体水平上看,草炭:蛭石:珍珠岩=1:1:1的基质配方要优于其他基质配方,有利于番茄对氮的吸收;而且番茄体内的氮含量有随生育期的延长而降低的趋势。更多还原

【Abstract】 In order to select the substrate treatment which adapt to tomato growth in soilless cultivation,the experiment was studied the changes of N nutrient in tomato that was planted in substrates mixed by different ratio,including grass peat,vermiculite,perlite and sand. The results showed that the N contents of tomato absorbed from the different treatments were obviously discrepancy. From the overall level,the mixed substrates of grass peat:vermiculite:perlite = 1:1:1 was conducive to the N absorption of tomato,and it was superior to other treatments. Besides,the N content of tomato was decreasing with prolonging growth period.更多还原