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低、中产小麦的经济施肥是低产变中产,中产变高产重要措施之一。近几年来我区小麦单产不断提高,但都不超过300斤全区750万亩小麦,单产700斤以上的不超过50万亩,大面积是200—400斤的中、低产地。为解决大面积小麦增产技术问题,我所自1976年以来,在全区中、低产地上布置了化肥同量不同期和同期不同量的试验。结果同量的化肥不同期施用和同期施入不同量的化肥增产效益不同,同量的化肥在不同产量水平地上施用,经济效益也不同。现将几年来全区的试验结果汇总简述于后:
The economic fertilization of low and middle-grade wheat is one of the important measures of low-yielding and middle-yielding and middle-yielding. In recent years, the yield of wheat in our region has been continuously increasing, but not more than 300 kilograms of whole region 750 million mu of wheat, yield more than 700 kilograms of not more than 500000 acres, a large area is 200-400 pounds of middle and low producing areas. In order to solve the technical problems of large area wheat yield increase, since 1976, we have arranged experiments of different amount and same amount of same amount of fertilizers in medium and low production areas in the whole region. Results The same amount of chemical fertilizer application in different periods and the same amount of different application of chemical fertilizer yield different benefits, the same amount of fertilizer in different yield levels on the ground, the economic benefits are also different. Now the region over the past few years the summary of the test results summarized later: