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:应用田间试验和植株化验分析方法,对玉米吸肥能力与喜肥程度进行研究得出:不同品种玉米对化肥中氮、磷、钾吸收总量及其利用率的差异较大,高低相差值达10~12倍;等量化肥对不同品种玉米的增产效果与经济效益的差异更大,高低相差值达256倍与167倍。可见,玉米品种间吸肥能力与喜肥程度的差异给化肥效应造成的影响远远超过化肥施用技术优劣之间的差异。研究还得出:对玉米吸肥能力与喜肥程度进行分级所应用的吸肥参数与化肥效应参数之间存在着极密切的直线正相关,其方程为y=022923+0847x(R=05923)。依据生产实际情况与需要,应用二参数已将不同品种玉米的吸肥能力与喜肥程度划分成高、中、低3个等级。因上述二参数存在着极密切函数相关。所以,应用化肥效应参数对玉米喜肥程度进行分级更为通俗、简便与实用。
The field experiment and plant analysis method were used to study the relationship between the absorption capacity of maize and the preference of heathy fertilizer. The results showed that the total amount of nitrogen, phosphorus and potassium absorbed by different varieties of maize and its utilization rate were quite different, Up to 1 1 ~ 2 times; the same amount of chemical fertilizers on different varieties of maize yield and economic benefits of the greater difference between the level of difference of up to 2 56 times and 16 7 times. Can be seen that the difference between the ability of maize varieties to absorb fertilizer and the level of fertilizer to fertilizer effect far exceeds the difference between the advantages and disadvantages of fertilizer application technology. The study also concludes that there is a very close and linear correlation between the parameters of fertilizer application and the parameters of fertilizer application on the grading of the absorption capacity of maize and the preference of heathy. The equation is y = 022923 + 0.87x (R = 05923). According to the actual situation and needs of production, the application of the second parameter has been divided into high, medium and low levels of fattening and fattening of different varieties of maize. Due to the two parameters there is a very close function related. Therefore, the application of fertilizer effect parameters on the level of gratification of corn more popular, simple and practical.