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本文利用2个12年的试验结果(1个为积雪管理×肥料使用量研究,另1个为耕作试验),创建出种植在半干旱草原残茬地上硬红粒春小麦产量估测的回归模式:Y=10O6十10.53WU-0.O17WU2+5.52FN-0.095FN’一33.16SN+0.436SN’一0.112(FNXSN)+0.057(FNXWU)十G.159(SNXWU)一1.26DD(R’一0.89,P-0.001,N-262),Y一籽粒产量(kg/hm2),WU一估测的水分利用量(mm),SN一土壤测定N(kg/hmz),FN。N肥使用量(kg/hm:),DD为>SC的度日数。水分利用量是0~1.Zm深土层春播前可用的水分十5月IH至8月31日雨量十浇灌水分,sN是秋季测定的0~0.6cm深NO。一N量。该模式用萨斯喀彻温省褐土带另两个试验进行校验。结果表明,当SN<55kg/1。m’且具有广泛的水分利用区问时,该模式能提供细、中和粗壤土上合理的产量估计。
In this paper, we use two 12-year experimental results (one for snow cover × fertilizer use and the other for tillage) to create a regression model for estimating hard-red spring wheat yield on semi-arid steppe stubble : Y = 10O6 ten 10.53WU-0. O17WU2 + 5.52FN-0.095FN ’- 33.16SN + 0.436SN’ - 0.112 (FNXSN) +0.057 (FNXWU) + G 159 (SNXWU) -1.26DD (R’-0.89, P-0.001, N-262), Y-grain yield (kg / hm2), WU an estimated water use amount A soil test N (kg / hmz), FN. N fertilizer usage (kg / hm :), DD is> SC of the number of days. Water use is 0 ~ 1. Zm deep soil spring before sowing available moisture ten in May IH to August 31 rainfall ten irrigation water, sN is measured in autumn 0 ~ 0.6cm deep NO. A N amount. The pattern was verified with two more tests of the Saskatchewan cinnamon zone. The results show that when SN <55kg / 1. This model provides a reasonable estimate of yield on fine, medium and coarse loam soils with extensive water use zones.