CAJ | 학술논문

在兰州通过田间试验对不同水肥处理下，冷地型草地早熟禾（Poa pratensis）、多年生黑麦草（Lolium prenne）和紫羊茅（Festuca rubra）混播草坪枯黄期和返青期盖度进行观测，测定各处理下草坪绿期，并对草坪外观品质进行综合评价比较。结果显示灌水和施肥之间的耦合，以水分每周灌水20mm处理与施N肥25g／（m2·a）和12．5g／（m2·a）＋P2O5 7．5g／（m2·a）的配合，耦合效应著显，对推迟草坪枯黄和提前返青的效果都很突出，可显著延长冷地型混播禾草草坪的绿期。每周灌水20mm和施N肥25g／（m2·a）耦合最佳，可推迟草坪枯黄22d，提前返青15d，使草坪绿期延长37d。
재란주통과전간시험대불동수비처리하，랭지형초지조숙화（Poa pratensis）、다년생흑맥초（Lolium prenne）화자양모（Festuca rubra）혼파초평고황기화반청기개도진행관측，측정각처리하초평록기，병대초평외관품질진행종합평개비교。결과현시관수화시비지간적우합，이수분매주관수20mm처리여시N비25g／（m2·a）화12．5g／（m2·a）＋P2O5 7．5g／（m2·a）적배합，우합효응저현，대추지초평고황화제전반청적효과도흔돌출，가현저연장랭지형혼파화초초평적록기。매주관수20mm화시N비25g／（m2·a）우합최가，가추지초평고황22d，제전반청15d，사초평록기연장37d。
Based on the field experiment, the effect of water-fertilizer coupling on prolonging the green peri od of turf under different irrigation and fertilization treatments were studied by measuring the coverage, green period and quality of cold season turf in Lanzhou. The results indicated that the irrigation treatment W3 （20 mm per week）and fertilization treatment N2 （25 g N/m2 · a） or NP （12.5 gN/m2 · a ＋7.5 g P2O5/m2 · a）shown the best effect for postponing the withering date and forwarding the re-greening date among all treatments. The interaction effect of the coupling between W3 and N2 was the best, and the withering date was postponed for 22 days,there-greening date was forwarded for 15 days and the green period was prolonged for 37 days.