The Influence Of Different Planting Methods And Fertilizer On Spring Wheat Growth, Water Use Efficiency And Photosynthetic Parameters

The experiment adopts different fertilizer treatments to investigate the dynamic accumulation of dry matter and the soil nutrition and moisture use efficiency of wheat under the two different cultivation modes conditions, and the preliminary proving Soil over film-mulched and bunch-seeded the OPT (N 150kg/ha, P 120kg/ha, K 84kg/ha) to prove dry matter and the soil nutrition and moisture use efficiency wheat .The main conclusions are as follow :1 Different fertilizer treatments to dry matter absorption in each growth period of wheat in early slowly metaphase fast later slowly"S"Variation curve.The fast period appear the jointing stage- filling stage.mature stage-filling stage begin to slow down.2 Soil over film-mulched and bunch-seeded planting mode is superior than the Unmulched and bunch-seeded mode on N, P, K and dry matter absorption, Soil over film-mulched and bunch-seeded planting in dry matter absorption improve 55% than Unmulched and bunch-seeded. Under Soil over film-mulched and bunch-seeded planting cumulate nutrients of N,P,K of soil over film-mulched and bunch-seeded is higher than that Soil over film-mulched and bunch-seeded planting in each stage.3 Soil over film-mulched and bunch-seeded planting mode is superior than the Unmulched and bunch-seeded mode on Water use efficiency. Soil over film-mulched planting mode about CK is superior than the Unmulched and bunch-seeded on water use efficiency improve 22.7%, Soil over film-mulched about opt on water use efficiency is 42.6% more than Unmulched and bunch-seeded.4 Soil over film-mulched and bunch-seeded planting mode with OPT fertilize treatments improve the yields and photosynthetic characteristics of wheat. Water stress caused by the plant photosynthesis is under drought condition of crop, crop yields comes mainly from photosynthetic.5 Compared with the Unmulched and bunch-seeded that the soil over film-mulched and bunch-seeded of wheat has 42.4% increase on the grain yield,OPT>OPT-K>FP>OPT-P>CK>OPT-N, the trements about OPT and OPT-N, OPT-P,FP,CK differences obviously(p<0.05). The OPT trements wheat yield higher FP and CK, respectively, growing yield 21.2% , 32.9% .