Crops ›› 2016, Vol. 32 ›› Issue (5): 106-111.doi: 10.16035/j.issn.1001-7283.2016.05.018

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Yield Benefit of Maize Planting Mode with Ditching and Pitting and Polythene Mulch Intercropping with Potato

An Tongxin,Chen Mengli,Zhou Feng,Lu Jing,Wu Bozhi,Zhang Lian'gen   

  1. Faculty of Agronomy and Biotechnology,Yunnan Agricultural University,Kunming 650201,Yunnan,China
  • Received:2016-06-01 Revised:2016-08-26 Online:2016-10-15 Published:2018-08-26
  • Contact: Lian'gen Zhang

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Abstract: Aim

ed at the intensified drought problems on agricultural production in Yunnan province, this experiments working on maize intercropping potato, drought resistance and cultivation technology of rainwater harvesting were carried out in agricultural technology demonstration bases of Xuanwei city. The results showed that the maize drought resistance+ditching or hole pitting+polythene mulch and intercropping potato technology integration measures could increase the soil moisture. The soil moisture of maize ditching intercropping and pitting intercropping were higher than maize flat ridge to 28.32% and to 25.16% than potato. In the early growth stage of maize, the integrated measures of maize drought resistance+ditching or hole pitting+polythene mulch and intercropping potato technology could promote maize and potato growth and development. Plant height and leaf area index were better than maize flat ridge planting and maize monoculture. Maize plant height of ditching and hole pitting were increased more by 31.94% and 26.33% than flat ridge, and the leaf area index (LAI) were increased 49.56% and 25.29%, respectively. The theory of maize yield and economic factor based on integration technology was better than the flat ridge intercropping and maize monoculture. The technique could significantly increase the yield of maize, the composite yield and the land equivalent ratio (LER=1.20), which was higher than the flat ridge, and its production benefit was remarkable. So the integration technology measures can make effective use of water resources, improve the system for crop drought resistance, and has important significance for food security and stable agricultural income.

Key words: Maize, Potato, Intercropping, Drought resistance cultivation, Yield benefit

Table 1

ANOVA analysis of maize soil moisture (0~7.6cm) of different treatment %"

日期
Date		 处理Treatment F值
F value		 P值
Pvalue
A B C D
6-04 48.80a 46.97a 37.33b 38.03b 5.414* 0.025
6-26 29.32 29.72 29.33 24.59 0.580 0.644
7-18 12.24 12.19 12.98 9.97 1.955 0.199
8-09 21.53 19.41 18.84 22.68 2.860 0.100
8-29 20.07 18.58 17.44 21.79 2.709 0.115
9-20 22.61 22.08 20.92 19.76 3.100 0.089
10-12 16.87 15.47 15.46 14.74 0.805 0.525

Table 2

ANOVA analysis of potato soil moisture (0~7.6cm) of different treatment %"

日期
Date		 处理Treatment F值
F value		 P值
Pvalue
A B C E
6-04 38.27 40.30 37.33 32.43 1.292 0.342
6-26 29.54 32.00 26.89 24.88 2.734 0.114
7-18 17.99a 13.73b 13.80b 11.33b 5.470* 0.024
8-09 12.64 14.10 12.16 14.59 2.430 0.140
9-20 23.60a 20.50ab 19.00ab 16.40b 6.207* 0.017
10-12 15.80a 13.60ab 10.46b 10.50b 5.357* 0.026

Table 3

ANOVA analysis of maize plant height of different treatment cm"

日期
Date		 处理Treatment F值
F value		 P值
Pvalue
A B C D
6-04 73.70aA 70.57aA 55.86bB 61.29bB 14.972** <0.001
6-26 181.57aA 170.14bA 150.29cB 169.86bA 13.831** <0.001
7-18 249.86a 241.57ab 233.43a 246.00a 3.441* 0.033
8-09 252.61 240.86 239.36 246.50 1.873 0.161
8-29 253.29 238.79 239.93 246.71 2.227 0.111
9-20 253.21 238.71 240.94 246.50 1.642 0.206
10-12 245.71abA 225.14cB 232.57abAB 248.43aA 5.219** 0.006

Table 4

ANOVA analysis of maize LAI of different treatment"

日期
Date		 处理Treatment F值
F value		 P值
Pvalue
A B C D
6-04 1.90bcAB 2.13aA 1.70cB 2.03bcA 11.485** 0.003
6-26 3.60bB 4.03bB 3.43bB 5.30aA 10.874** 0.003
7-18 5.23 5.10 4.70 5.13 2.390 0.144
8-09 6.47 6.67 6.07 6.20 1.187 0.374
8-29 5.13aA 4.83abAB 3.43cC 4.07bB 9.197** 0.006
9-20 2.92 2.90 2.95 2.97 0.060 0.980
10-12 3.48 2.77 3.55 3.23 2.300 0.154

Table 5

ANOVA analysis of potato plant height of different treatment cm"

日期
Date		 处理Treatment F值
F value		 P值
Pvalue
A B C E
6-04 31.43 28.57 27.43 29.80 0.513 0.677
6-26 55.86 58.43 54.14 49.10 2.359 0.094
7-18 81.00bA 91.86aA 86.71abA 63.91cB 18.949** <0.001
8-09 87.86bcAB 105.86aA 93.14abAB 72.40cB 6.451** 0.002

Table 7

ANOVA analysis of maize yield factors of different treatment"

项目Item 处理Treatment F值
F value		 P值
P value
A B C D
穗位高Ear height(cm) 99.56 95.89 104.50 101.35 2.690 0.062
茎粗Stem diameter(cm) 6.71 6.79 11.42 7.41 0.804 0.501
穗长Ear length(cm) 21.41 22.78 20.08 21.38 2.671 0.064
穗粗Ear diameter(cm) 17.68 17.99 17.31 17.82 1.432 0.251
穗行数Rows per ear 15.11 16.00 14.67 14.80 2.546 0.073
秃顶长度Bald length(cm) 2.37 2.07 2.21 2.68 0.734 0.539
穗相对行粒数Grains per row 77.44 76.67 74.56 76.90 0.281 0.839
千粒重1000-grain weight(g) 303.41 284.50 304.39 281.46 2.715 0.091
理论产量Theoretical yield(t/hm2) 16.73 16.69 14.91 15.94 0.949 0.428
经济系数Economic coefficient(%) 59.79 61.46 59.24 57.95 2.085 0.121

Table 6

ANOVA analysis of potato LAI of different treatment"

日期
Date		 处理Treatment F值
Fvalue		 P值
Pvalue
A B C E
6-04 1.43 1.77 1.33 1.40 3.387 0.074
6-26 6.27 6.63 4.33 3.63 2.733 0.114
7-18 5.07 5.00 4.80 4.33 3.164 0.086
8-09 3.87 4.87 4.73 4.37 0.792 0.532

Table 8

ANOVA analysis of output and benefit of different treatment"

处理
Treatment		 玉米产量(t/hm2)
Maize yield		 马铃薯产量(t/hm2)
Potato yield		 产值(万元/hm2)
Output value		 复合产量(t/hm2)
Compound yield		 土地当量比(LER)
Land equivalent ratio
A 10.99a 5.20abAB 3.34abB 12.03abAB 1.17aA
B 11.55a 4.85bB 3.93aA 12.52aA 1.20bB
C 10.45a 4.39bB 3.29bB 11.33bB 1.09aA
D 12.07ab — 2.90cB 12.07abAB —
E — 19.98aA 3.20bB 4.00cC —
F值F value 4.44* 141.61** 9.97** 124.97** 13.70**
P值P value 0.041 <0.001 0.002 <0.001 0.006
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