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Effects Of Different Planting And Irrigation Patterns On Growth And Water Use Efficiency In Summer Maize

Posted on:2011-02-03Degree:MasterType:Thesis
Country:ChinaCandidate:Y Z LiFull Text:PDF
GTID:2143330338978972Subject:Crop Cultivation and Farming System
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Form 2008 to 2009, effects of different planting and irrigation patterns on soil moisture, growth and development, physiological, yield, water use efficiency were studied under field experiments and laboratory analysis at the experimental farm of Henan University of Science and Technology.There are four planting patterns and three irrigation patterns in this test.The main result were as follows: 1. Effects of soil moisture and soil enzyme activities in different planting and irrigation patternsSoil moisture was different in different period and planting cultures. When soil moisture was higher than other period, with the depth of soil layers changes soil moisture was reduced gradually between 0cm and 100cm, flatten culture was lowest. When soil moisture was lower than other period, with the depth of soil layers changes soil moisture was increased gradually between 0cm and 100cm, which was higher between 0cm and 60cm in 2008 in flatten culture, there have not significant difference between 60cm and 100cm. With the depth of soil layers changes, soil moisture was"Z"in flowering of others growth stages. Between different irrigation patterns, soil moisture was higher between 0cm and 60cm in male tetrad. Irrigation ditch was higher than non-irrigation, border irrigation was highest in flowering; border irrigation was lowest between 0cm and 40cm in maturity, Soil moisture tends to be uniform in this stage.With the depth of soil layers, the urease activity and alkaline Phosphates and soil catalyses activity first in creased and then decreased in maturity, furrow irrigation was highest in different treatments. Irrigation ditch was higher than non-irrigation. Soil invertase was reduced gradually, which was higher between 0cm and 30cm soil layer in furrow irrigation.2. Effects of growth and development in different planting and irrigation patterns The emergence rate was worse in ridge culture in different planting patterns. Leaf area index and Dry matter accumulation were highest in furrow and ride culture in 2009, dry matter accumulation was increased by 5.58% and 8.13% and 13.00% than furrow and ride and flatten respectively. Grain distribution was ridge forming culture >furrow > ride>flatten in 2009.LAI and dry matter accumulation were highest in conventional furrow irrigation, which were lowest in border irrigation. Dry matter accumulation in conventional furrow irrigation was increased by 3.55% and 13.00% than conventional furrow irrigation and border irrigation respectively in maturity.3. Effects of photosynthetic and transpiration rate and fluorescence and Senescence Physiology in different planting and irrigation patternsThe photosynthetic rate of ridge and furrowing culture was higher in 2009. Chlorophyll content in ridge forming culture was increased by 3.93% and 6.32% and 11.45% than in ridge forming culture and flatten culture respectively. Senescence physiology of Fv/Fm,ΦPSⅡ,qp ,SOD, POD, CAT activities were higher in conventional furrow irrigation ,while NPQ was highest in border irrigation. SOD, POD, CAT activities in conventional furrow irrigation were higher by 8.87% and 38.74% and 20.18% than alternative furrow irrigation and border irrigation. MDA content was lowest in border irrigation.4. Effects of yield and WUE in different planting and irrigation patternsThe yield of ridge forming culture was highest, which was higher 2.52% and 5. 94% and 9.53% than ridge forming culture and flatten patterns respectively. The WUE of furrow culture,ridge forming culture were higher 3.32 kg/hm~2·mm,2.75 kg/hm~2·mm than flatten culture respectively. The yield of furrow irrigation increased by 1.70% and 9.52% respectively, which compared with furrow irrigation and border irrigation. The WUE of alternative furrow irrigation was 29.43 kg/hm~2·mm, while furrow irrigation and border irrigation were 26.34 kg/hm~2·mm and 23.59 kg/hm~2·mm. increased 11.73% and 24.75% than furrow irrigation and border irrigation respectively.
Keywords/Search Tags:Summer maize, Planting patterns, Irrigation patterns, Soil moisture, Grain yield, Water use efficiency
PDF Full Text Request
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