论文部分内容阅读
利用缓释或控释肥料 ,在盆栽条件下研究了大豆生育期间干物质积累、分配、养分吸收和产量的变化 ,结果表明 :生育期间的总干物质的积累 ,结荚期以前所有缓释肥料处理的均高于对照 ,尤以LP -40和LP -70的处理作用明显 ,而结荚后只有LP -40、LP -70和LP -SS1 0 0A 3个处理的干物重高于对照 ;缓释时间短的肥料对氮素的吸收影响不大 ,而时间长的则减少前期的吸收 ,然而 ,缓释或控释肥料均能一定程度的增加K+ 的含量 ,但对PO43 -影响不大。控释肥料LP -SS1 0 0A可增产 2 1 .9% ,而缓释肥料LP -70和LP -1 80A分别增产 1 3 .1 %和 1 2 .2 %。
The results showed that the accumulation of total dry matter during the growth period, all the slow-release fertilizer before podding period The results showed that LP-40 and LP -70 had a significant effect on the treatment, while only the LP-40, LP-70 and LP-SS110A had higher dry weight than the control However, the slow-release fertilizer had little effect on the absorption of nitrogen, while the long-time decreased the absorption of the earlier period. However, slow-release or controlled-release fertilizer could increase the content of K + to some extent, but had little effect on PO43 -. The controlled release fertilizer LP-SS1 0 0A increased yield by 21.9%, while the slow-release fertilizer LP -70 and LP-1 80A increased by 13.1% and 12.2% respectively.