Correlation Research Of Corn Plant Carbon Accumulation And Water Consumption

According to the issue that the weak on theories and technical studies about efficientcarbon cumulative in the Oasis Irrigation where limited irrigation conditions. Through thefield trials, in the different level of the ridge, film and irrigation（Test participants factor code:M was the whole film; Mh was semimembranous; R was ridge; F was flat farming;1,2and3respectively represented high, medium and low level of irrigation）.The aim was toresearch the characteristics of corn dry matter and carbon accumulation, discuss thecharacteristics of water consumption of the different modes and quantified the differentwater processing unit carbon cumulative efficiency and these key impact indicators. Lookforward to increase the water use efficiency of Hexi Oasis Irrigation and improve theaccumulation of carbon, purpose was provide theoretical about optimal managementmeasures of maize and practical basis in the arid region. The study results showed that:1. The levels of irrigation and planting mode have significantly affected on maturitycorn carbon content. And the interactions effects between the factors have effect significantlyon the carbon content of corn at maturity. The combination of flat farming, semi-filmprocessing and lower irrigation system increased the carbon content of corn significantly.Compared to each treatment, the content of carbon under MhR₃of maize was the largest atmaturity, it was higher than MR1by70.03%.The proportion of the maize kernels carbonaccounts for the carbon content of the whole plant at maturity could expressed as: MhR₃﹥MhF₁﹥MF₃﹥MhR₂﹥MR₃﹥MhF₃﹥MR₂﹥MF₁﹥MhF₂﹥MhR₁﹥MR₁﹥MF₂.Three tested factors about the level of irrigations, planting pattern and the way coatedhave significant impacted on the production of corn economy yield. Flat、membranecovering the whole with efficient irrigation system would improved the economic yield ofcorn. Economic yield and harvest index of corn under high irrigation levels weresignificantly higher than the low irrigation level, but the biological and economic yield ofcorn were not increased with the improvement of the irrigation amount. The maximumeconomic yield and harvest index was MF2treatment, compared with the MhF2whicheconomic yield was the second and the MR₃which had the lowest yield, respectivelyincreased1.42%and22.64%.2. In the low, middle, and high water level, the total water consumption of flat were lessthan the corresponding ridge processing in corn whole growth period. And the treatment of membrane coverings reduced water consumption for each treatment. Corn waterconsumption increased with the irrigation amount grows. So, lower level for irrigation quotacombined with the whole film is possible measures to reduce water consumption of corn.The level of irrigation, cultivate methods and the way of film have significant effect oncorn evaporation each others. In the level of low, middle, and high irrigation, totalevaporation of the half film were higher than the whole film processing, and evaporation ofeach treatment were increased with the increase in the amount of irrigation. Among them,the evaporation of MhF1was the largest one in corn whole growth period. The value of E/ET under semi-film was greater than the whole film in the whole growth period of corn. Inthe level of low, middle, and high irrigation, the value of E/ET under the whole filmprocessing was the minimum, In the level of high irrigation the smallest value of E/ETwas MF; In the middle and low irrigation, the smallest value of E/ET is MF.3. Irrigation levels and planting pattern had a significant effect on WUE of corn.However, the effect of film mulching was not significant. Flat planting combine efficientirrigation can improve the WUE of corn significantly. In the all treatments, the water useefficiency of corn under MF2was the largest. It was significantly higher than othertreatments.Irrigation levels and film mulching had no significant effect on unit dry weightaccumulated during the time of corn growth, however, the cultivation methods in force wassignificant. And the interaction by planted and film were also significant on the unit waterconsumption accumulated dry weight. The methods of film on flat cultivate, cansignificantly increase the dry weight by water consumption accumulated. The treatment ofMF2has the largest water use efficiency by corn dry matter weight. It was significantlyhigher than other treatments. Compared the level of the irrigation, dry weight calculatedWUE was largest in the middle irrigation. The accumulation of carbon content and drymatter weight at per unit water consumption had the same results.4. The accumulation of carbon had a significant positive correlation with LAI, LAIDand E/ET, especially LAI. In this test, the average LAI under the whole film treatmentrepresented greater than the corresponding semi-film processing in the whole growth period.In the level of high, medium and low water irrigation, compared with MhR, the MRincreased by5.71%,2.29%,9.26%; compared with MhF, the MF increased by-4.74%, 4.12%,2.01%. And LAI will improve with the increase of irrigation amount. LAID was thelargest under MhF1, increased by10.93%than MhR₃which was the minimal treatment.