Effects Of New Fertilizers On Physiological Characteristics Yield And Quality Of Sunflower

Inner Mongolia Hetao area is rich in water resources.In recent years,the industrial structure of Hetao irrigation area has been optimized,and sunflower has become one of the main cultivated crops in the area.It is already one of the main sources of local farmers'income.With the continuous expansion of sunflower planting area,long-term fixed single fertilization model,not only caused excessive waste fertilizer,soil nutrient imbalance,destroyed the soil structure,increased production costs,but also accelerated environmental pollution.In this study,several new fertilizers and chemical fertilizers were used to study the effects of several new fertilizers and chemical fertilizers on physiological characteristics,yield and quality of sunflower,and to provide theoretical basis for improving sunflower yield and quality.(1)Appropriate amount of silicon fertilizer can reduce the plant height of edible sunflower,increase the leaf area of the sunflower,increase the SPAD value of the leaves,improve the net photosynthetic rate,transpiration rate,stomatal conductance and decrease the intercellular CO2 concentration The treatment rate of 135Kg per hectare was 321.49cm,which was 6.02%lower than that of untreated silicon fertilizer.It also promoted the uptake and dry matter accumulation of sunflower,Kernel rate and single grain weight,which increased the yield.The application of silicon fertilizer reduced the crude fat content of sunflower seed kernel and increased the content of crude protein.(2)Appropriate application of humic acid water fertilizer is beneficial to improve the leaf area index of edible sunflower and improve the leaf chlorophyll content.Enhanced net photosynthetic rate,transpiration rate and stomatal conductance,intercellular CO2 concentration decreased;application of humic acid water soluble fetilizer can also promote sunflower absorption of nitrogen,phosphorus and potassium;increase plant height,promote dry matter accumulation and transfer,through Increased yield,seed yield and seed setting rate of edible sunflower were increased,and the yield of 150Kg per hectare was the highest,3196.20kg/hm2,which was 12.10%higher than that of untreated silicon fertilizer.There was no significant effect on the protein content of sunflower seed kernel.(3)the application of animal husbandry and bio-organic fertilizer can significantly improve the leaf area index of preserved kelp,delay leaf senescence,increase leaf green content;improve net photosynthetic rate,transpiration rate and stomatal conductance value,enhance photosynthetic capacity;,The absorption of potassium,significantly increased the accumulation of dry matter,the application of 1800 per hectare treatment of dry matter quality accumulation reached 1681.58 g/plant,16.31%higher than the control and the yield components to promote high yield;increase the consumption of sunflower seeds Of crude protein content and crude fat content.