Crops ›› 2019, Vol. 35 ›› Issue (2): 179-184.doi: 10.16035/j.issn.1001-7283.2019.02.028

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Effects of Different Supporting Cultivation Measures on the Yield and Weeds Control of Sweet Potato cv. Shangshu 9

Yajun Liu,Fengli Chu,Wenjing Wang,Qiguo Hu,Aimei Yang   

  1. Shangqiu Academy of Agriculture and Forestry Sciences, Shangqiu 476000, Henan, China
  • Received:2018-08-14 Revised:2018-12-13 Online:2019-04-15 Published:2019-04-12
  • Contact: Aimei Yang

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Abstract:

Field experiments were conducted to study the effects of different herbicides and plastic film mulching on the weeds control and yield of sweet potato. The results showed that the herbicides and plastic film mulching had positive effects on the weeds control, agronomic and economic characters of sweet potato. In the different treatments of the herbicides and plastic film mulching, the 50% acetochlor EC×black membrane treatment had the best effectiveness on the weeds control of sweet potato plant; and fresh weight of the 33% pendimethalin EC×black membrane or transparent membrane treatment had the worst effectiveness on the weeds control; and fresh weight of the 33% pendimethalin EC was not effective on the weeds control. The dry matter rate of sweet potato of the 50% acetochlor EC×transparent membrane treatment was the highest, the dry matter rate of the stem and the T/R value were the lowest. The yield of fresh and dry sweet potato and the rate of commercial potato of the 96% methoprolopamide EC×black membrane treatment were the highest. In addition, the herbicide and film mulching had an extremely significant interaction on the weeds control, economy and agronomic characters of sweet potato. Considering the weed control and commodity value factors, the treatment of 96% methoprolopamide EC×black film is more suitable measure for production. The research results can provide the scientific basis for the weeds control of Shangshu 9.

Key words: Sweet potato, Herbicide, Film mulching, Yield, Weed control

Table 1

Effects of herbicides and plastic film mulching on the weeds control of sweet potato in field"

处理Treatment 杂草株数Number of weeds 杂草鲜重Fresh weight of weeds (g) 株防效Plant control (%) 鲜重防效Fresh weight control (%)
CK 380.33±26.22a 496.38±19.86a - -
T1 73.25±9.77bc 131.85±11.59bc 80.74±12.21ab 73.47±8.18ab
T2 47.62±4.01c 117.41±8.81bc 87.48±9.56a 76.38±6.79ab
T3 102.03±11.23b 210.14±19.29b 73.17±8.56b 57.69±37.05b
T4 52.98±7.10c 102.53±12.36c 86.07±8.01a 79.39±4.51ab
T5 26.29±5.12c 61.22±4.00c 93.09±10.23a 87.71±6.86a
F
A 0.85 1.13 2.17 0.63
B 3.22 8.65* 4.36 8.89*
A×B 15.32** 22.94** 16.59** 26.94**

Table 2

Effects of herbicides and plastic film mulching on the agronomic of sweet potato"

处理Treatment T/R值T/R value 蔓长Stem length (m) 薯块干物率Dry matter rate of tuber (%) 蔓茎干物率Dry matter rate of stem (%)
CK 0.89±0.06a 1.72±0.04c 27.01±0.10c 12.56±0.19a
T1 0.77±0.06a 1.76±0.04bc 27.95±0.14b 11.26±0.30bc
T2 0.87±0.07a 1.75±0.04bc 27.58±0.23b 11.66±0.29b
T3 0.86±0.08a 1.75±0.04bc 27.88±0.33b 11.56±0.23b
T4 0.82±0.03a 1.82±0.02b 27.56±0.41b 11.35±0.18bc
T5 0.80±0.02a 1.99±0.08a 28.52±0.75a 10.95±0.40c
F
A 0.02 0.61 0.42 0.14
B 0.90 16.93** 8.98* 0.55
A×B 2.47* 0.41 1.92 12.43**

Table 3

Effects of herbicides and plastic film mulching on the yield formation of sweet potato"

处理
Treatment		 鲜薯产量(kg/hm2)
Yield of fresh sweet potato		 薯干产量(kg/hm2)
Yield of dry sweet potato		 生物产量(kg/hm2)
Biological yield		 商品薯率(%)
Commercial rate
CK 24 341.0±860.0c 6 571.8±256.3d 46 000.7±292.4c 61.25±4.61c
T1 29 283.1±1 759.0ab 8 130.6±432.7abc 54 481.4±752.0ab 67.74±2.28ab
T2 27 892.1±1 559.3bc 7 759.3±467.4bc 52 041.5±1 129.7b 66.73±0.52b
T3 27 089.8±526.6bc 7 473.2±186.4cd 50 165.1±1 731.3bc 65.72±2.11b
T4 32 795.9±626.8a 9 151.2±754.6a 59 133.7±723.6a 71.25±1.03a
T5 30 173.5±1 491.2ab 8 662.9±215.9ab 58 408.0±2 339.8a 68.50±1.81ab
F
A 1.42 1.22 2.17 3.10
B 2.71 4.34 7.53* 6.91*
A×B 13.86** 17.63** 13.67** 12.22**

Table 4

Correlation analysis of main characters of sweet potato"

指标Index 鲜薯产量
Fresh yield		 商品薯率
Commercial rate		 T/R值
T/R value		 蔓长
Stem length		 薯块干物率
Dry matter rate of tuber		 蔓茎干物率
Dry matter rate of stem
鲜薯产量Fresh yield -1
商品薯率Commercial rate -0.62** -1
T/R值T/R value -0.60** -0.54* -1
蔓长Stem length -0.26 -0.44 -0.22 -1
薯块干物率Dry matter rate of tuber -0.25 -0.50* -0.26 -0.58** -1
蔓茎干物率Dry matter rate of stem -0.04 -0.28 -0.14 -0.64** -0.58** 1
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