黑龙江水利科技
黑龍江水利科技
흑룡강수리과기
HEILONGJIANG SCIENCE AND TECHNOLOGY OF WATER CONSERVANCY
2014年
7期
5-7
,共3页
黑土区%春玉米%苗期%拔节期%优化灌溉%互作效应
黑土區%春玉米%苗期%拔節期%優化灌溉%互作效應
흑토구%춘옥미%묘기%발절기%우화관개%호작효응
black soil region%spring maize%seedling stage%jointing stage%optimal irrigation%interaction effect
为了探明黑土区春玉米高效灌溉制度，采用“D-206”饱和最优设计，通过田间小区试验研究了苗期、拔节期不同灌溉控制水平对玉米产量的影响。结果表明：对玉米产量不利影响大小为拔节期水分亏缺程度大于苗期水分亏缺程度；当目标产量为11250 kg／hm2以上时，在95％的置信区间，优化调亏灌溉组合为苗期水分亏缺下限阈值取田间持水量的51％～63％，上限为70％～75％，拔节期水分亏缺下限阈值取田间持水量的60％～73％，上限为80％～85％。
為瞭探明黑土區春玉米高效灌溉製度，採用“D-206”飽和最優設計，通過田間小區試驗研究瞭苗期、拔節期不同灌溉控製水平對玉米產量的影響。結果錶明：對玉米產量不利影響大小為拔節期水分虧缺程度大于苗期水分虧缺程度；噹目標產量為11250 kg／hm2以上時，在95％的置信區間，優化調虧灌溉組閤為苗期水分虧缺下限閾值取田間持水量的51％～63％，上限為70％～75％，拔節期水分虧缺下限閾值取田間持水量的60％～73％，上限為80％～85％。
위료탐명흑토구춘옥미고효관개제도，채용“D-206”포화최우설계，통과전간소구시험연구료묘기、발절기불동관개공제수평대옥미산량적영향。결과표명：대옥미산량불리영향대소위발절기수분우결정도대우묘기수분우결정도；당목표산량위11250 kg／hm2이상시，재95％적치신구간，우화조우관개조합위묘기수분우결하한역치취전간지수량적51％～63％，상한위70％～75％，발절기수분우결하한역치취전간지수량적60％～73％，상한위80％～85％。
In order to study the efficient irrigation system of spring maize in black soil region,“D-206”saturated optimum design is adopted;field experiment was conducted to study the effects of seedling, jointing different irrigation levels on the yield of maize.The results show that the adverse effect on maize yield at jointing stage,and the water deficit degree at jointing stage is bigger than that at seedling stage.When the target yield is above 1 1 250 kg/hm2 ,within the 95% confidence interval,optimized regulated deficit irrigation combination is the lowest threshold of water deficit at seedling stage ,which is 5 1%~63% of field capacity,the highest limit is 70%~75%;the lowest threshold for water deficit at jointing stage is 60%~73% of field capacity,the highest limit is 80%~85%.
