Dissertation > Excellent graduate degree dissertation topics show

Study on Canopy Structure、Photosynthesis Production and Nutrients Transfer Characteristics of Cotton in Apricot-cotton Intercropping System

Author: WeiHongGuo
Tutor: ZhangJuSong
School: Xinjiang Agricultural University
Course: Crop Cultivation and Farming System
Keywords: Intercropping cotton Monoculture cotton Photosynthetic production Nutrient Yield Quality
CLC: S562
Type: Master's thesis
Year: 2011
Downloads: 69
Quote: 0
Read: Download Dissertation

Abstract


To explore the the South Xinjiang fruit cotton intercropping pattern under the cotton growth and development characteristics, photosynthetic production, nutrient transfer, production and quality, from March 2010 to November 7 in Xinjiang of Kashi City Yuepuhuxian under Bazaar Township village group analysis apricot and cotton intercropping of cotton growth, yield and quality factors, and monoculture and intercropping conditions under cotton photosynthesis, canopy structure, changes in nutrient transfer characteristics of the shoot a more detailed analysis of study designed for grain and cotton fruit cultivation in Xinjiang to provide a theoretical basis. The major test conclusions are as follows: a whole growth period for cotton than monoculture cotton nights 8 d; the main stem Day growth of intercropping cotton to 0.83 cm · d-1, 0.91 cm · d-1, after topping monoculture cotton , plant height intercropping cotton is 58.01 cm, single cotton is 64.51 cm; under intercropping main stem elongation, starting section height rise, fruit branch length, the lower part of intercropping cotton than cotton monoculture, total fruit section ratio 53.47% lower monoculture cotton boll rate is 6.99% lower than the monoculture; Wai bell of the total in the lateral distribution, intercropping cotton boll number 58%, monoculture cotton 67%, vertical distribution of intercropping cotton central 31% cotton, 10% lower than the monoculture Central boll is an important factor in the formation of cotton production; \than that, intercropping cotton LAI before the flowering stage faster growth in intercropping cotton peak flowering stage, value of 4.31 monoculture cotton boll period reached a peak value of 4.63; intercropping cotton monoculture cotton MTA With growth period goes by in the boll period maximum is 50 °, the groups DIFN increases, reducing the photosynthetically active area, thereby reducing the solar energy utilization; intercropping cotton various parts of the bell on the leaf SPAD value were lower than the cotton monoculture; under intercropping conditions, no significant difference in the Pn of cotton monoculture conditions, Ci high, GS, and thus the Evap slow, resulting in low Pn dry matter accumulation, boll weight and yield decreases. 3. Maximum accumulation of intercropping cotton moment (tm) N after emergence 77 d than monoculture cotton late 10 d P2O5 at 79 d than the monoculture cotton nights 4 d, K2O at 76 d than cotton monoculture night 15 d; maximum accumulation rate of intercropping cotton N 3.02 kg · d-1, 33.5% lower than monoculture cotton, P2O5 1.62kg · d-1, 40.4% lower than the monoculture of cotton, K2O 2.06kg · d- lower than the monoculture cotton 58.6%; nutrient accumulation of intercropping cotton duration N 37 d P2O5 for 33 days, K2O 63 d.4 under intercropping reduced cotton lint percentage the term harvest the number of trees to 183,400 strains · hm-2, the number of bolls per plant to 3.6, lint percentage of 38.6%, 1352.84 kg · hm-lint yield, 43.8% lower than the monoculture of cotton; under intercropping, light a little time, low temperature , fiber synthesis slower, less content, decline in quality, lower than the overall intercropping of cotton fiber quality of cotton monoculture cotton.

Related Dissertations

  1. Study on Theory and Experiment of Wire Drawing with Composite Ultrasonic Vibration,TG663
  2. Temporal and Spatial Variation of Methane Emission from Urban Lake and Its Relationship with the Hydrology-water Quality,X524
  3. Multi-currency Notes Technology Research and Implementation,TP391.41
  4. Effect of Soil Erosion on Soil Quality in the Cultivated Slope Land on the Loess Plateau, China,S157.1
  5. Effects of CRZ-1 on Growth of Wheat under Salt Stress, Chlorophyllase and Yield,S512.1
  6. Integrative treatment of elderly patients with hypertension TCM syndromes and quality of life,R544.1
  7. Based on SEM Quality Evaluation of Rural Compulsory Education in China,G522.3
  8. On the Classroom Disciplinary Management Strategies of Primary Schools under the Context of "Quality Education",G622.4
  9. Effects of Shading on the Yield Index and Main Biochemical Components of Tea in Hilly Tea Plantation,S571.1
  10. Genetic Model Analysis and QTL Mapping of Agronomic and Quality Traits in Soybean,S565.1
  11. The Antioxidative Efficient Component Recognition for Curcuma Longa L. Based on the Quality Control Pattern of Constituent Knock-out/Knock-in,R285
  12. Research and Design of One Kind of Paper’s QCS That Based on Embedded System,TP368.1
  13. Comprehensive Quality Assessment of College Students,G645.5
  14. Studieson Effects of Soybean Species on Yuba and Initial Establishment of Quality Evalution System for Yuba,TS214.2
  15. Study on Application of Red Yeast Rice in Fermented Sausage,TS251.65
  16. Application of Numerical Designing Cigarette Blending Formula on Computational Intelligence,TS44
  17. The Research on Improvement of Rice Noodles Quality,TS213.3
  18. Active Power Filter and Its Application in Distribution Network,TN713.8
  19. Subarea Management of Tobacco Soil Nutrients and Adequate Fertilization Research by Micro Scale,S158
  20. Effects of Water and Nitrogen Coupling on the Water and Nitrogen of Soil and Yield and Quality of Flue-cured Tobacco in Luzhou,S572
  21. Distribution of the Contents of Pectin and Cellulose and Their Effect on Smoking Quality in Flue-cured Tobacco of China,S572

CLC: > Agricultural Sciences > Crop > Economic crops > Fiber crops > Cotton
© 2012 www.DissertationTopic.Net  Mobile