大垄双行模式下设施番茄生长发育及土壤硝态氮研究

Study on Protected Tomato Growth and Soil Nitrate Nitrogenunder Double Row Planting Mode

与单垄单行种植模式相比,大垄双行模式下番茄产量得到显著提高,达到105826 kg/hm^(2),可增产6.2%;果实N、P_(2)O_(5)、K_(2)O吸收量均显著提高,分别增加12.3%、6.2%、9.0%;增加了番茄生长前期的净光合速率和胞间二氧化碳浓度,而对作物生长后期的光合参数影响较小,整体改善了作物生长的透光性;有利于降低土壤0~60 cm土层NO_(3)^(-)-N的残留,平均降低43.8%,在0~20 cm土层削减效果最好。由此可见,大垄双行模式是一种适宜轻简化作业、资源节约、环境友好的新型种植模式,适用于辽宁地区设施番茄优化栽培种植。

This paper studied the effect of double row and single row planting mode on tomato growth and soil nitrate nitrogen.The results showed that:compared with the single row planting mode,tomato production was significantly improved to 105826 kg/hm^(2)under double row mode,increased by 6.2%.The absorption of fruit N,P_(2)O_(5) and K_(2)O wassignificantly increased by 12.3%,6.2%and 9.0%respectively.It increased the net photosynthetic rate and intercellular carbon dioxide concentration during early tomato growth,and less influence on the photosynthetic parameters of late crop growth.Overallit improved the light transmission of crop growth.It reduced the residue of NO_(3)^(-)-N of 0~60 cm soil layer,decreased of 43.8%.Cuteffects was the best at 0~20 cm.Therefore,it can be seen that the double row mode is a new planting mode for light simplified operation,resource saving and environment-friendly,which is suitable for the optimization of cultivation and planting of tomato facilities in Liaoning area.