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Study of Physiological, Ecological and Economic Benefit of Qiubei Chili under Intercropping

Author: WangLi
Tutor: WuBoZhi
School: Yunnan Agricultural University
Course: Crop Cultivation and Farming System
Keywords: Chili Corn Intercropping Physiology and Ecology Economic benefits
CLC: S641.3
Type: Master's thesis
Year: 2009
Downloads: 48
Quote: 0
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Abstract

2007 and 2008 in Wenshan Prefecture in Qiubei County bark Township conducted chili in different intercropping the (corn chili intercropping 2:4,1:4,2:6,2:8,2:10; peanut chili intercropping 2:8 , 2:10; soy chili intercropping 2:6,2:8,2:10; sunflower pepper intercropping The 2:10; pepper net for), pests and diseases, physiological and ecological effects and economic benefits. The study results show that: 1. Compared to the net for intercropping pepper pest damage reduction. Intercropping peppers community incidence lower than net 9.79% -48.34%; the intercropping processing, chili and corn intercropping relatively low incidence of cell. Intercropping chili condition index in 2007 compared with net for low 21.80% -67.19% 2008 than net for low 18.44% -25.54%, intercropping pepper disease incidence than net for low 67.99% -88.00%; intercropping treatment, pepper The disease index soybean intercropping gt; and peanut intercropping gt; corn intercropping. 2007 intercropping chili insect damage rate than net for low 31.83% -81.80% (F = 2.426 *, P = 0.047), and corn chili intercropping 2:10 chili insect lowest hazard rate. 2008 intercropping chili insect damage lower than net 16.67% -55.58%, corn chili intercropping 2:10 of chili insect lowest hazard rate, the amount of one hundred insects least 88.92% less than net. Integrated pest control effect derived corn chili intercropping 2:10 mode chili. Climate factors such as differences in the two years before 2007 drought in the late rain concentrated, resulting in two years of pests and diseases situation, 2008 pepper pest lighter. 2 as compared with the net, intercropping chili soil temperature decreased soil moisture increases; each treatment chili at the top by the light situation north-south line to obvious differences things row to insignificant. The soil temperature between the different processing pepper line downwardly from the surface decreasing, has an upward temperature gradient. Highly significant differences in the average soil temperature of each soil layer between the lines of different treatment chili 0 ㎝ Department: net for the pepper line between the soil temperature is higher than intercropping 0.57% -10.48% (2007: F = 10.264 **, P = 0.000; year: F = 3.969, P = 0.011); 5 cm at: net for pepper between the lines, soil temperature than intercropping 3.62% -9.75% (2007: F = 8.432 **, P = 0.000; 2008: F = 22.946 **, P = 0.000). Net for soil moisture than intercropping low ,0-6 cm soil layer: intercropping pepper line between the soil moisture content is higher than net 1.68% -15.68%; 0-20 cm soil: corn chili intercropping 2:10 ratio of net deal 10.04% higher. And net as compared to the top of the light intensity of intercropping pepper did not change much. Intercropping treatment, corn chili to intercropping 2:8,2:10 mode chili at the top by the light the whole, better than 2:6,2:4, the north-south line to each treatment noon insignificant difference compared 8:00-11:00 am large differences between 15:00-18:00 pm; east-west did not change significantly. The net for chili photosynthetic rate was 0.69% -48.08% higher than intercropping intercropping processing corn chili intercropping 2:8,2:10 mode. Pepper plant height differences of intercropping net for a significant number of branches of intercropping is less than the net for intercropping cover than for large net. 2007 soybean pepper intercropping a 2:10 of chili plant height higher than net 6.71% -13.69%; late 2008, intercropping treatment with chili reduction of the number of rows, plant height increased. Intercropping pepper cover higher than net 4.72% -32.50%. 2007 pepper branch number differences between the different treatment significantly, in 2008 the difference was not significant, the number of branches net for chili 4.52% -45.48% higher than intercropping. Intercropping chili certain biological traits. 4. Reasonable pepper intercropping mode of economic benefits than the net well. 2007 corn pepper intercropping 2:10 highest value over the net high of 2256.48 yuan / hm2, followed by 2:8, the output value is higher than net 158.13 yuan / hm2 intercrop in 2008 the output value of the net for increased 9.16% -42.58 %, the middle of the intercropping treatment for sunflower highest value, followed by corn chili intercropping 2:8, the output value than the net as high of 7036.23 yuan / hm2. From the land equivalent ratio the various intercropping treatment are greater than 1 (1.031-1.610). Reasonable intercropping model can effectively improve the utilization of land, but also increase the economic efficiency of the unit area. Based on the above test results, 2 row corn intercropping 8 rows pepper, 2 row corn intercropping Line 10 chili significant effect in the control of pests and diseases, and improve economic efficiency, excellent intercropping model-based test.

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