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为了更为合理的利用风沙土壤资源,本文将新型微润灌溉技术应用于风沙土玉米灌溉,通过田间试验研究了不同微润灌溉灌水量对玉米生长和产量的影响,从而为风沙土膜下微润灌溉制度的制定提供理论依据。试验结果表明:灌水量对微润灌溉玉米株高、茎粗、LAI和单株地上干物质量等营养生长影响较小;穗长、穗粗、行粒数、百粒重、穗粒重、穗重等产量构成性状和产量均随着灌水量的增加先增大后减小,穗行数随灌水量变化不大,秃尖长随灌水量的增加先减小后增大,灌水量75%ET时,玉米微润灌溉产量最高,达到7.8t/hm2;WUE随着灌水量的增加而下降,25%ET时WUE最大,为1.35 kg/m3。因此,在风沙土地区,灌水量宜控制在25%~75%之间。
In order to utilize the sandy soil resources more reasonably, this paper applied the new micro-irrigation technology to irrigated sandy soil corn. The effects of different micro-irrigated irrigated quantity on the growth and yield of maize were studied through field experiments. The establishment of irrigation system provides a theoretical basis. The results showed that irrigation volume had little effect on the vegetative growth of corn plants with micro-irrigation, such as plant height, stem diameter, LAI and dry weight per plant. Spike length, ear diameter, grain number, The results showed that both the traits and the yield of heavy-medium-yield increased firstly and then decreased with the increase of the irrigation amount, while the number of the ear-rows changed little with the irrigation amount. The length of the bald tip first decreased and then increased with the increase of the irrigation amount. The irrigation amount was 75% The maximum yield of corn was 7.8t / hm2 when ET was applied. WUE decreased with the increase of irrigation volume. The maximum WUE was 1.35 kg / m3 at 25% ET. Therefore, in the sandy soil area, the amount of irrigation should be controlled between 25% ~ 75%.