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田间试验结果表明,磷肥带状施用比传统的穴施玉米增产效果达显著水平,其主要原因是带状施肥适度地增加了磷肥与土壤的接触面,使玉米根系有相当的磷素营养土体.用~(32)p示踪微区试验证实,玉米四个生育期中,带状施用的吸磷量均比穴施的高出1～2倍以上;带状施肥利用率13.20～14.65%,种肥穴施为4.15%.本技术已为黑龙江省20个市县的中间试验所肯定,并已推广3000余万亩.
The results of field trials showed that the effect of zonal application of phosphate fertilizers was significantly higher than that of conventional corn treatments, mainly because zonal fertilization modestly increased the contact surface between phosphate fertilizer and soil and resulted in considerable phosphorus nutrition soils in maize roots The results of ~ (32) p tracing micro-area experiments showed that the phosphorus uptake of banded corn was more than 1 ~ 2 times higher than that of the point application during the four growth stages of maize. The strip fertilization and utilization rate was 13.20 ~ 14.65% Fertilizer application rate of 4.15% .This technology has been 20 cities and counties in Heilongjiang Province, the middle of the test has been affirmed, and has promoted more than 3,000 mu.