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9 b 7 5 Z T Y K l b V 2 I N q s M Table 2 Change of photosynthetic rateP n and SPADof tomato y Factors q mol m 2 s 1 Photosynthetic rate P n SPAD 7 5 7 20 8 5 8 20 9 5 7 5 7 20 8 5 8 20 9 5 T1 6 74 0 56a 16 50 1 13a 14 23 0 17a 14 96 0 74a 8 05 0 50ab 50 70 1 48a 49 90 1 99a 61 80 4 47a 53 70 2 44a 49 70 1 73a T2 6 41 0 37a 16 19 0 94a 13 13 0 59a 14 55 1 27a 9 93 0 41a 49 50 1 75a 49 80 3 13a 60 40 5 64a 55 20 3 80a 52 00 4 37a T3 6 04 0 51a 14 14 0 89a 12 24 0 98a 13 59 0 91a 6 90 0 60b 48 90 4 07a 49 40 3 61a 58 30 5 42a 52 00 3 27a 47 90 4 72a W1 5 66 0 57b 11 73 0 39c 10 53 0 77b 10 08 0 34b 5 74 0 38b 42 20 1 79b 47 10 0 37b 57 50 0 95b 49 80 3 01b 48 00 1 43a W2 6 58 0 33a 16 96 0 97b 14 66 0 68a 16 88 1 05a 9 06 0 55a 51 90 0 21a 52 10 4 40a 62 40 4 03a 55 90 3 18a 50 60 2 85a W3 6 95 0 61a 18 15 0 46a 14 40 0 86a 16 15 1 71a 10 08 0 63a 54 90 3 96a 49 80 3 37ab 60 60 4 92ab 55 20 3 32a 51 00 3 03a N1 5 83 0 44b 14 43 0 64c 11 95 0 32b 15 51 0 75b 6 61 0 48b 47 50 2 38b 43 80 0 44b 57 80 3 46b 51 20 2 43b 43 50 3 05b N2 6 71 0 54a 15 72 0 46b 12 94 0 45a 14 63 1 43b 9 69 0 65a 49 00 2 36ab 52 60 0 10a 62 90 3 75a 56 20 3 06a 53 80 4 41a N3 6 65 0 55ab 16 69 1 45a 14 70 0 95a 12 96 0 89a 8 58 0 69a 52 60 1 90a 52 60 3 27a 59 80 1 64ab 53 50 3 21ab 52 30 5 25a 2 2 2 T I N s SPAD Y V 2 V I N 3 W 5 Z T SPAD A s b 9 W1 W2 A s W2 W3 A s T 9 A s T 9 s N2 N3 A s N1 s b V n a R 9 g V 3 p V 9 W3 N3 i b H V I N s Y K v g y N2 s SPAD K v N3 Q b Q 9 y V C W2 s SPAD K v W3 Q b V n a R 9 s SPAD 4 b V 3 T I N Y Table 3 Effect onyield of tomato on water and N fertilization supply Treatments y Factors kg hm 2 Yield T W N T1W3N3 1 3 3 104140 3 T1W2N2 1 2 2 101618 7 T1W1N1 1 1 1 75490 0 T2W2N3 2 2 3 107104 0 T2W1N2 2 1 2 80670 7 T2W3N1 2 3 1 93914 8 T3W1N3 3 1 3 84630 5 T3W3N2 3 3 2 96159 5 T3W2N1 3 2 1 86780 0 k1 93749 7 80263 7 85394 9 k2 93896 5 98500 9 92816 3 k3 89190 0 98071 5 98624 9 Range 4706 5 18237 2 13230 0 Better level T2 W2 N3 2 3 T I N Y T I N Y n V 3 b 9 y W y N I N A Y 9 W1 W2 I N 3 A s W2 W3 s A g N1 aN2 aN3 s A N1 N2 N2 N3 A s N1 N3 W s A b 5 Z T T1 aT2 aT3 A s 7 T2 T3 3 A s b s V K v 9 y 18 237 2 kg hm 2 Q y 5 Z T K l 4 706 5 kg hm 2 1 V I N 9 y a g T 5 Z T K F W2 aN3 aT2 K 107104 0kg hm 2 b O Cobb Douglas 3 f Z E 3 V M M W G i 1 V r g y Y b 5 Z T I N A Y y N 9 W N 1 M N y M Y V H s y Cobb Douglas 7 98 0 3677 0 2722 eYWN 1 T Y kg hm 2 W 9 mm N g kg hm 2 b k H q 9 3 v g 3 9 9 F 1 I N 9 F 37 g 9 F 1 I N 9 F 30 b V n I N Y 9 y v g y b 3 9 I N a Y 3 S A Y O Y v g y Y 9 9 v 7 9 v I N 3 5 9 v h l b 4 a f 7 a B 9 T V 9 F 9 g V A 4 I N a Y a g V 9 I N 3 4 b 7 I 10 C k H q g I N Y
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