| Shaanxi corn for the production practice to increase corn production, corn, water and fertilizer to improve resource efficiency as the goal, respectively Weibei Shaanxi Guanzhong dry farming areas and agricultural areas irrigated corn cultivation set up 5 test mode, Mode 1: Farmers plant habit; Mode 2: Planting Model 1 (target: production increase of 10% to 15%, water and fertilizer use to improve the use of resources 10% to 15%); Model 3: Planting Model 2 (target: production increase of 10% to 15%, water and fertilizer use to improve the use of resources 10% to 15%); Mode 4: Chong High yield (target: 30% production growth, water and fertilizer efficiency of resource use increased by 30% to 50%); Mode 5: Planting Model again (target: 30% production growth, water and fertilizer efficiency of resource use increased by 30% to 50%). Explore Weibei dry farming areas and customs in the area of irrigated agriculture and the cultivation of maize production potential model to study the different physical characteristics of maize cultivation patterns, clearly on the high efficiency of the physiological basis of yield models and physiological mechanisms to achieve the main research the results are:1. With farmers planting habits (mode 1) compared to mode 2, mode 3, mode 4 and mode 5, 4 kinds of grain yield cultivation patterns showed in two experiments yield, Model 2 13.57%~14.49% yield, Model 20.83%~25.45% yield, Mode 4 40.60%~58.52% yield, model 5 36.66%~36.97% yield, cultivation mode 4 output targets were achieved.2. With farmers planting habits (mode 1) compared to mode 2, mode 3, mode 4 and mode 5, 4 kinds of culture patterns of soil water use efficiency (WUE) in two experiments have different levels of increase, model 2 increased 23.87%~24.35%, Model 3 increased 24.33%~ 29.83%, model 4 increased 37.68%~65.16%, mode 5 increased 33.65%~42.69%, four kinds of cultivation methods were used to improve water use efficiency.3. With farmers planting habits (mode 1) compared to mode 2, mode 3, mode 4 and mode 5, 4 kinds of culture patterns of nitrogen use efficiency (PFP) in the two experiments as follows: Model 2 PFP increased 13.59%~14.50%, mode 3 of PFP increased 20.83%~25.47%, mode 4 of the PFP decreased 20.72%~29.69%, mode 5 PFP only increased 2.49%~2.72%, Mode 2 and Mode 3 to achieve a high yield of maize and fertilizer use efficiency goals, while modes 4 and 5 of nitrogen use efficiency is low.4. With farmers planting habits (mode 1) compared to mode 2 and mode 3, the corn increased the amount of light energy intercepted 0.58%~15.91%, dry matter accumulation of the total population increase of 13.48%~24.49%, especially after the dry popcorn accumulation increased 18.50%~37.73%, dry matter transfer rate 3.76%~89.51%, dry matter increased 45.81%~268.12%, dry matter production of nitrogen fertilizer efficiency 13.48% ~24.49% N of popcorn dry matter production efficiency 18.50%~37.73%, nitrogen transfer efficiency of dry matter 14.29%~88.73%.Mode 2 and Mode 3 of the corn has a reasonable population structure, photosynthetic capacity after flowering, strong, dry matter accumulation after flowering, large, efficient transfer of dry matter, nitrogen dry matter production efficiency, dry matter production after nitrogen popcorn transfer efficiency and nitrogen efficiency of dry matter is the physiological basis of its high yield and efficiency.5. With farmers planting habits (mode 1) compared to Mode 4 and Mode 5 of the corn increased the amount of light energy intercepted by 9.74%~27.99%, dry matter accumulation of the total population increased 29.03%~37.57%, popcorn dry matter accumulation after increased 43.35%~55.68% of their high physiological factors.With farmers planting habits (mode 1) compared to Mode 4 and Mode 5 nitrogen efficiency of dry matter production decreased 1.08%~32.34%, mode 4 of the popcorn nitrogen efficiency of dry matter production decreased 22.16%~24.80%, its nitrogen transfer also reduced the efficiency of dry matter 1.41%~32.14%; the model after 5 nitrogen dry matter production efficiency popcorn only 7.52%~10.65% increase, the efficient transfer of nitrogen dry matter has increased only 7.14%~15.49%. Mode 4 and Mode 5 nitrogen efficiency of dry matter production, nitrogen popcorn dry matter production efficiency and low efficiency of nitrogen in dry matter is its high nitrogen use efficiency is not the reason. |
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