Crops ›› 2017, Vol. 33 ›› Issue (2): 163-167.doi: 10.16035/j.issn.1001-7283.2017.02.029

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Effects of Different Application Amount and Application Time on Yield and Height of Rice

Zhao Huaibin,Zhao Changshan,Yu Yankun   

  1. Agronomy Academy,Northeast Agricultural University,Harbin 150030,Heilongjiang,China
  • Received:2016-12-12 Revised:2017-02-20 Online:2017-04-15 Published:2018-08-26
  • Contact: Changshan Zhao

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Abstract:

The influences of oxadiazon、butachlor and oxyfluorfen pesticide applying dosage, time and other factors on plant height and yield of rice were investigated through potting experiment. The results showed that the influence of 12.5% oxadiazon EC 749.63g a.i./hm 2 on plant height and yield were significantly higher than that of 449.78g a.i./hm 2and 599.70g a.i./hm 2. The effect of 60% butachlor EC 1 619.19g a.i./hm 2 on height and yield were significantly higher than that of 809.60g a.i./hm 2 and 1 079.46g a.i./hm 2. The effect of 24% oxyfluorfen EC 71.96g a.i./hm 2 and 107.95g a.i./hm 2 on height and yield were significantly higher than that of 35.98g a.i./hm 2. Three days before transplanting and 5d after transplanting stage, the application of 12.5% oxadiazon and 60% butachlor was safer than that 1d before and 3d after transplanting, applying 24% oxyfluorfen before transplanting was safer than that after transplanting.

Key words: Rice, Oxadiazon, Butachlor, Oxyfluorfen, Security

Table 1

The application dosage of herbicide settings g a.i./hm2"

药剂
Herbicide		 施药量1
Dosage 1		 施药量2
Dosage 2		 施药量3
Dosage 3
12.5%噁草酮乳油
12.5% oxadiazon EC		 449.78
 599.70
 749.63
60%丁草胺乳油
60% butachlor EC		 809.60
 1 079.46
 1 619.19
24%乙氧氟草醚乳油
24% oxyfluorfen EC		 35.98
 71.96
 107.95

Table 2

The influence different herbicides on the height of rice"

药剂
Herbicide		 施药量
(g a.i./hm2)
Dosage		 移栽前3d
Before transplanting 3d		 移栽前1d
Before transplanting 1d		 移栽后3d
After transplanting 3d		 移栽后5d
After transplanting 5d
株高(cm)
Height		 抑制率(%)
Reduced rate		 株高(cm)
Height		 抑制率(%)
Reduced rate		 株高(cm)
Height		 抑制率(%)
Reduced rate		 株高(cm)
Height		 抑制率(%)
Reduced rate
施药后10d CK 0.00 18.44a – 19.83a – 21.64a – 23.91a –
After the 12.5%噁草酮乳油 449.78 18.19ab 1.33 19.33ab 2.55 21.39ab 1.16 23.78a 0.58
application 10d 12.5% oxadiazon EC 599.70 17.66c 4.23 18.69b 5.76 20.22bc 6.56 22.70b 5.06
749.63 16.72d 9.33 17.84cd 10.06 19.47d 10.05 21.87c 8.53
60%丁草胺乳油 809.60 18.14ab 1.61 19.27ab 2.85 21.25ab 1.80 23.43a 2.04
60% butachlor EC 1 079.46 17.76bc 3.65 18.89b 4.73 20.63cd 4.69 22.69b 5.11
1 619.19 16.87d 8.52 17.77cd 10.39 19.39d 10.40 22.32bc 6.68
24%乙氧氟草醚乳油 35.98 18.11ab 1.76 18.69b 5.76 19.28d 10.92 22.18bc 7.27
24% oxyfluorfen EC 71.96 17.04d 7.59 17.97c 9.38 18.28e 15.53 21.21d 11.30
107.95 16.21e 12.10 17.23d 13.10 17.48e 19.25 20.90d 12.60
施药后30d CK 0.00 44.98a – 46.87a – 45.78a – 50.21a –
After the 12.5%噁草酮乳油 449.78 44.70ab 0.62 46.17ab 1.49 45.55ab 0.50 49.52a 1.36
application 30d 12.5% oxadiazon EC 599.70 44.39ab 1.31 45.87b 2.15 44.94b 1.82 49.17a 2.06
749.63 43.13c 4.12 44.26c 5.57 43.45cd 5.09 47.49b 5.42
60%丁草胺乳油 809.60 44.65ab 0.73 46.23ab 1.38 45.19ab 1.28 49.43a 1.55
60% butachlor EC 1 079.46 44.32ab 1.48 45.91b 2.06 44.89ab 1.93 49.27a 1.87
1 619.19 42.93cd 4.56 42.49d 9.36 43.15d 5.75 46.99b 6.41
24%乙氧氟草醚乳油 35.98 44.28ab 1.56 45.84b 2.20 43.93c 4.04 47.03b 6.33
24% oxyfluorfen EC 71.96 42.68cd 5.12 43.56c 7.08 43.09d 5.87 44.82c 10.73
107.95 42.28d 6.01 42.14d 10.11 41.74e 8.83 43.37d 13.62

Table 3

The influence of different herbicides on the yield of rice"

药剂
Herbicide		 施药量
(g a.i./hm2)
Dosage		 移栽前3d
Before transplanting 3d		 移栽前1d
Before transplanting 1d		 移栽后3d
After transplanting 3d		 移栽后5d
After transplanting 5d
产量(g)
Yield		 减产(%)
Reduced		 产量(g)
Yield		 减产(%)
Reduced		 产量(g)
Yield		 减产(%)
Reduced		 产量(g)
Yield		 减产(%)
Reduced
CK 0.00 56.09a – 55.21a – 55.37a – 56.15a –
12.5%噁草酮乳油 449.78 55.49a 1.07 54.38a 1.49 54.77ab 1.09 55.73a 0.74
12.5% oxadiazon EC 599.70 55.22a 1.55 52.57b 4.77 51.67c 6.69 54.95a 2.14
749.63 52.21b 6.92 49.59c 10.18 48.24d 12.89 53.59b 4.55
60%丁草胺乳油 809.60 55.97a 0.21 54.53a 1.22 54.47ab 1.63 55.70a 0.79
60% butachlor EC 1 079.46 55.07a 1.82 52.47b 4.95 54.20ab 2.13 54.91a 2.21
1 619.19 52.16b 7.01 50.34c 8.82 51.01c 7.87 53.27b 5.13
24%乙氧氟草醚乳油 35.98 54.94a 2.05 52.06b 5.69 48.34d 12.70 52.88b 5.82
24% oxyfluorfen EC 71.96 52.07b 7.17 49.50c 10.34 46.34e 16.31 50.99c 9.18
107.95 50.03c 10.80 46.14d 16.42 44.91f 18.89 49.09d 12.57
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