【摘要】 本文探讨了春季灌水次数和追氮量对冬小麦冀麦２４号和冀麦２３号的籽粒产量、籽粒蛋白质含量和蛋白质产量的影响。两品种的籽粒产量和蛋白质产量以及冀麦２３号的籽粒蛋白质含量，均以春季浇４水为最高，冀麦２４号的籽粒蛋白质含量则以春季浇３水最高。追氮量对３项指标均有显著影响，各指标均随春季追氮量增加而提高。在春季灌３～６水范围内，每公顷追纯Ｎ２４０ｋｇ或１８０ｋｇ时３项指标达最高值，仅是浇３水时略有例外。籽粒产量、籽粒蛋白质含量和蛋白质产量之间均是显著正相关。更多还原

【Abstract】 In this paper,the effects of watering frequency(W)and nitrogen-dressing rate(N)in spring on the three indexes of winter wheat,namely,grain yield,grain protein content,and protein yield,were discussed according to the results of a field experiment conducted in Shenze County,Hebei province, during 1985-1986 winter wheat growing season, using two varieties as materials,with a split plot design,in which,the watering frequency with four levels(W3,W4,W5andW6,meaning 3,4,5and6watering times)was main plot,and the nitrogen-dressing rate with four levels(N60,N120,N180and N240,meaning,60,120,180and240kgN/hm2)was split plot.The effects of spring watering frequencies on all the three indexes were not statistically significant,although both the highest grain yield and the highest protein yield were obtained for the W4 main plot. Spring nitrogen-dressing rates had very significant effect on the three indexes. The more nitrogen was dressed in spring,the higher grain yield,grain protein content and protein yield were obtained. In all the four main plots,the highest grain yields,grain protein contents and protein yields were given by the N240 orN180 split plots with few exceptions.All the coefficients of correlation between every two ofthe three indexes were positive and statistically significant.更多还原