CAJ | 학술논문

设置3个冬小麦品种、4个播期和4种密度的大田裂区试验,研究晚播条件下的播期密度对冬小麦群体性状和产量的影响以及不同品种的高产适宜播期和密度.结果表明,各品种的群体总茎蘖数和穗数随着播期推迟和密度降低而下降;不同小麦品种晚播高产的适宜播期和适宜密度并不相同.西农979的适宜晚播期为10月15日,在450 万苗/hm~2下产量最高达到9.20 t/hm~2;小偃22晚播期为10月19日,在密度225万苗/hm~2下产量最高达8.29 t/hm~2;陕558在10月27日播种,375万苗/ hm~2下产量最高为8.16 t/hm~2.可见不同冬小麦品种在其适期晚播的基础上通过相适应的播种密度予以调控,同样能够达到适宜的群体结构,并实现小麦高产.
설치3개동소맥품충、4개파기화4충밀도적대전렬구시험,연구만파조건하적파기밀도대동소맥군체성상화산량적영향이급불동품충적고산괄의파기화밀도.결과표명,각품충적군체총경얼수화수수수착파기추지화밀도강저이하강;불동소맥품충만파고산적괄의파기화괄의밀도병불상동.서농979적괄의만파기위10월15일,재450 만묘/hm~2하산량최고체도9.20 t/hm~2;소언22만파기위10월19일,재밀도225만묘/hm~2하산량최고체8.29 t/hm~2;협558재10월27일파충,375만묘/ hm~2하산량최고위8.16 t/hm~2.가견불동동소맥품충재기괄기만파적기출상통과상괄응적파충밀도여이조공,동양능구체도괄의적군체결구,병실현소맥고산.
A field trail using split-plot design with three winter wheat varieties,four planting dates and four kinds of sowing rate was conducted to study the effect of different planting date and sowing rate on colony properties and grain yield of wheat and the suitable planting date and sowing rate for the different winter wheat varieties under the late-sown condition. The result showed that the total stems and spikes of colony in each variety dropped as sowing date postponed and the sowing density reduced; and the optimized planting date and sowing rate for high yield were various among different varieties. Grain yield of Xinong 979 could reach up to 9 200 kg per hectare,correspondingly,the suitable planting date was 15th Oct. and sowing rate was 4 500 thousand seedlings per hectare. For Xiaoyan 22,the highest grain yield was 8 290 kg per hectare under planting date on 19th Oct. and sowing rate 2 250 thousand seedlings per hectare. But for Shaan 558,the late-sown date was until the end of October (27th Oct.),and sowing rate was 3 750 thousand seedlings per hectare,its highest grain yield was 8 160 kg per hectare. Therefore,we can conclude that the suitable structure of colony can be reached for different winter wheat varieties under optimizing planting date through adjustment and control of sowing rate,and also realized the high yield of the wheat. These results can be applied to optimize cultivate plan for the late-sown high-yield winter wheat in Guanzhong area of Shaanxi province.