CAJ | 학술논문

采用二次回归正交旋转组合设计试验，研究叶面喷施硒肥时期、硒肥用量、喷施次数和间隔时间对大豆籽粒含硒量的影响效应。结果表明，各因子对大豆籽粒含硒量都有显著影响，喷施时期延迟，硒含量下降；喷施次数增加，硒含量上升；随硒肥用量和间隔时间增加，硒含量均先增加后减少。要获得200～300 ug/kg 的大豆硒含量，应在初花后4～8 d 喷施硒肥，喷施2～3次，每次间隔6～7 d，共施硒肥2300～3100 mL/hm2。
채용이차회귀정교선전조합설계시험，연구협면분시서비시기、서비용량、분시차수화간격시간대대두자립함서량적영향효응。결과표명，각인자대대두자립함서량도유현저영향，분시시기연지，서함량하강；분시차수증가，서함량상승；수서비용량화간격시간증가，서함량균선증가후감소。요획득200～300 ug/kg 적대두서함량，응재초화후4～8 d 분시서비，분시2～3차，매차간격6～7 d，공시서비2300～3100 mL/hm2。
Q uadratic regression orthogonalrotation com bination design testw as used to study the selenium contentchange rule in soybean by changing spraying selenium period,selenium fertilizer dosage,spraying tim es and intervaldays.The results show ed thatthe four factors had significanteffects on selenium contentin soybean.Spraying period delayed,selenium contentplum m eted;Spraying tim es increased,the selenium contentsoared;W ith the increase ofselenium fertilizerdosage and intervaldays,the selenium contentin soybean increased firstly, then decreased.To obtain 200~300 ug/kg selenium content,the reasonable fertilizing plan w as to spray selenium 2 300~3 100 m L/hm 2,4~8 d afterflow ering,6~7 d ofintervals,2~3 tim esduring the leftgrow th period.