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通过开展早熟西瓜根外追肥二因素试验(浓度、次数),并对试验结果进行变量分析与多重比较,定量地得出:西瓜乒乓球大时,喷施0.5%~1.0%的磷酸二氢钾,每7 d/次,共2~3次,对早熟西瓜的单位面积产量几乎没有影响,但对提高含糖量,增进食用品质有极显著的作用。1材料与方法1.1肥料磷酸二氢钾。1.2试验设计1.2.1试验因子浓度(A)、次数(B)2因素,3水平(A_1=0.0%、A_2=0.5%、A_3=1.0%,B_1=1次、B_2=2次、B_3=3次),
By carrying out two factors test (concentration and number) of topdressing watermelon root before ripening, and variable analysis and multiple comparisons of the test results, it is concluded quantitatively that when the table tennis ball of watermelon is sprayed with 0.5% -1.0% potassium dihydrogen phosphate , Every 7 d / time, a total of 2 to 3 times, yield per unit area of precocious watermelon has almost no effect, but to improve sugar content, improve food quality has a very significant role. 1 Materials and Methods 1.1 Fertilizer potassium dihydrogen phosphate. 1.2 Experimental design 1.2.1 Test factors Concentration (A), number of times (B) 2 factors, 3 levels (A_1 = 0.0%, A_2 = 0.5%, A_3 = 1.0%, B_1 = 3 times),