干旱区覆膜滴灌条件下氮磷钾肥配施对加工番茄产量及光合特性的影响

Effects of N P K Matches on the Yield, Phot osynthetic Character of Processing Tomato under Plastic Mulched Drip Irrigation

在覆膜滴灌条件下,研究了氮磷钾肥的配施对加工番茄的产量及光合特性的影响。结果表明:(1)T3(N300kg/hm2P2O5210kg/hm2K2O150kg/hm2)、T5(N300kg/hm2P2O5105kg/hm2K2O75kg/hm2)的肥料配比及施用量适合于加工番茄的高产,产量分别达到111360kg/hm2、111450kg/hm2,但从经济效益分析T5的经济效益最好,每公顷比对照CK(N0kg/hm2P2O50kg/hm2K2O0kg/hm2)净增收2487元。(2)不同氮磷钾肥的配施对加工番茄的单叶净光合速率也有一定的影响,其中T5的两个峰值最高分别达到24.767、21.683umol/m2/s,7个处理的单叶净光合速率的日变化曲线基本均为双峰曲线,现对加工番茄的光合“午休”现象做初步的分析。

In this paper, the influence of N P K matches on the yield and photosynthetic character of processing tomato were studied . The result indicated that （1）The match of T3 ,T5 were able to increase highly yield. T5 may increase pure income 2487 ynan/hm^2. （2） Different N,P,K matches also have partly influence to character of photosynthetic.