Potash Fertilizer Management On Processing Tomato Nutrient Absorption, Distribution, And The Inlfuence Of The Production Quality

Potash fertilizer by applying three different k content, three different application periods and threedifferent varieties in this study, Field plot experiment was carried out, Determine the processing tomato drymatter accumulation amount each period, K₂O uptake, Production of mature fruit, And the qualityparameters, To explore the different amount of potassium fertilizer、Application period and Differentvarieties of potash fertilizer on processing tomato nutrient uptake and yield, the influence of the quality.The main conclusions are as follows:（1） The potash the amount of120kg/hm², Drip irrigation topdressing potash50%flowering stage and50%of the results of drip irrigation topdressing, Dry matter accumulation of processed tomatoes、K2Ouptake, compared with other time and dosage increased significantly; Potassium fertilizer varieties forK-KCl processing amount of dry matter accumulation and maximum K₂O uptake, Followed by K-K₂SO₄and K-KNO₃.（2） The potash the amount of120kg/hm², Drip irrigation topdressing potash50%flowering stage and50%of the results of drip irrigation topdressing Processing tomato production is higher than the otherfertilization period, Potassium deficiency, Potassium less than, Excessive amount of potassium will reducethe processing tomato production; K-K₂SO₄and K-KNO₃treatment of processing tomato production isequal to K-KCl treatment of99.30%and95.36%respectively, KCl fertilizer efficiency is best, Followed byK-K₂SO₄.（3） Potash50%based facilities and50%of the flowering period drip irrigation topdressing, Thepotash the amount of120kg/hm², β-carotene content significantly lower, The color difference increasedsignificantly, Drip irrigation topdressing potash50%flowering stage and50%of the results of dripirrigation topdressing, The potash the amount of120kg/hm², Vc and total acid （titrable acid） content weresignificantly reduced; Potassium nitrate can significantly increase the fruit content of Vc, Reduce thechromatic aberration, Reduce the total acid, Potassium chloride can significantly reduce fruit acid, But Vccontent also decreased significantly; Potassium sulfate significantly reduced the fruit content of Vc,Increased chromatic aberration, The total acid also higher.（4） Applied into the right amount of potash in the appropriate period of time can improve processingtomato production. By processing tomato fertilizer effect equation can be obtained: Potash period dripirrigation topdressing50%flowering period and50%results processed tomatoes when topdressingfertilizer efficiency is best, The highest yield of potassium is143.62kg/hm², Best Budget amount ofpotassium125.89kg/hm², The highest processing tomato production75758kg/hm², Best economicproduction75541kg/hm².