Effects of different planting patterns on photosynthesis characteristic,grain yield and quality of maize
During 2020 and 2021,we investigated the effects of planting patterns of film mulching and open-field on the agronomic traits,photosynthetic indexes,yield and quality of maize using six maize varieties'Demeiya 3','Longdan 606','Longdan 339','Xianyu 335','Longdan 10' and'Yuyu 22' as materials in different re-gions of Hexi irrigation area.Results showed that there were no significant differences in the phenotypic traits be-tween film mulching and open-field cultivation,except plant height rose by 3.96%,cob diameter decreased by 6.87%,when compared film mulching with open-field planting pattern.Additionally,net photosynthetic rate (Pn),transpiration rate (Tr),stomatal conductance (Gs) and intercellular CO2 concentration (Ci) were different among varieties,however there was no significant difference between film mulching and open-field planting patterns.The average yield of maize was 16381.05 kg·hm-2 and 16186.05 kg·hm-2 under film mulching and open-field,re-spectively,and there was no significant difference between the two planting patterns regarding the yield.Moreover,there was no significant difference in crude fat,crude protein,and starch contents between the two planting pat-terns.Among the six varieties,the early and middle ripe varieties on average decreased in grain yield of 5.30% and 4.24% by using film mulching,while the late ripe varieties on average increased 7.91% in grain yield with film mulching under different regions in both years,respectively.However,compared to film mulching,the net econom-ic income of early and middle ripe varieties increased 9.19% and 6.99% under open-field planting,respectively,while the late ripe varieties on average decreased 5.08%.To sum up,it is concluded that the early and middle ripe maize varieties can be planted by the open-field planting,and the late ripe varieties can be planted with film mulc-hing in the irrigation area of Hexi Corridor,China.
planting patternmaizephotosynthesis characteristicgrain yieldqualityHexi irrigation area
万方数据
维普
