審定編號：國(guo)審(shen)棉2007007

品種名稱：國欣棉8號

選育單位：河間市國(guo)欣(xin)農(nong)村技(ji)(ji)術服務總會、中國(guo)農(nong)業(ye)科學(xue)院生物(wu)技(ji)(ji)術研究所、北京市國(guo)欣(xin)科創生物(wu)技(ji)(ji)術有限(xian)公(gong)司(si)

品種來源：SGK3×優質棉(mian)3012系

    特征特性：轉抗蟲(chong)基因中早熟雜(za)交一代品種，黃(huang)河流(liu)域棉(mian)區春播生育期123天，出苗旺(wang)，整(zheng)個生育期長(chang)勢強，后期葉功能好，不早衰，整(zheng)齊度(du)好。株型(xing)松散，株高105厘米，莖(jing)稈(gan)粗壯，葉片較(jiao)大(da)、綠色，第一果枝節(jie)位7.1節(jie)，單株鈴(ling)數(shu)(shu)17.2個，鈴(ling)較(jiao)大(da)、卵圓形(xing)、苞葉大(da)、吐絮暢，單鈴(ling)重6.0克，衣分39.75%，子指(zhi)10.9克，霜前花率(lv) 92.2%。抗枯(ku)萎病，耐黃(huang)萎病，抗棉(mian)鈴(ling)蟲(chong)；HVICC纖(xian)維上半部平均長(chang)度(du)30.9毫米，斷裂比強度(du)31.5厘牛(niu)/特(te)克斯，馬克隆值4.6，斷裂伸長(chang)率(lv)6.7%，反射率(lv)75.1%，黃(huang)色深度(du)7.4，整(zheng)齊度(du)指(zhi)數(shu)(shu)85.4%，紡紗均勻性指(zhi)數(shu)(shu)157。

    產量表現：2005年參加黃(huang)河流域(yu)棉(mian)(mian)(mian)(mian)(mian)(mian)(mian)區雜交春棉(mian)(mian)(mian)(mian)(mian)(mian)(mian)組品種區域(yu)試驗，子棉(mian)(mian)(mian)(mian)(mian)(mian)(mian)、皮棉(mian)(mian)(mian)(mian)(mian)(mian)(mian)和(he)(he)(he)霜前皮棉(mian)(mian)(mian)(mian)(mian)(mian)(mian)平(ping)均畝(mu)(mu)產(chan)(chan)(chan)分別(bie)為(wei)250.5公(gong)斤(jin)(jin)(jin)、102.8公(gong)斤(jin)(jin)(jin)和(he)(he)(he)95.9公(gong)斤(jin)(jin)(jin)，分別(bie)比對照中棉(mian)(mian)(mian)(mian)(mian)(mian)(mian)所41號(hao)(hao)增產(chan)(chan)(chan)18.1%、22.8%和(he)(he)(he)22.2%；2006年續(xu)試，子棉(mian)(mian)(mian)(mian)(mian)(mian)(mian)、皮棉(mian)(mian)(mian)(mian)(mian)(mian)(mian)和(he)(he)(he)霜前皮棉(mian)(mian)(mian)(mian)(mian)(mian)(mian)平(ping)均畝(mu)(mu)產(chan)(chan)(chan)分別(bie)為(wei)253.6公(gong)斤(jin)(jin)(jin)、97.5公(gong)斤(jin)(jin)(jin)和(he)(he)(he)88.8公(gong)斤(jin)(jin)(jin)，分別(bie)比對照魯棉(mian)(mian)(mian)(mian)(mian)(mian)(mian)研15號(hao)(hao)增產(chan)(chan)(chan)11.6%、5.9%和(he)(he)(he)1.8%。2006年生產(chan)(chan)(chan)試驗，子棉(mian)(mian)(mian)(mian)(mian)(mian)(mian)、皮棉(mian)(mian)(mian)(mian)(mian)(mian)(mian)、霜前皮棉(mian)(mian)(mian)(mian)(mian)(mian)(mian)畝(mu)(mu)產(chan)(chan)(chan)分別(bie)為(wei)238.3公(gong)斤(jin)(jin)(jin)、91.8公(gong)斤(jin)(jin)(jin)、86.0公(gong)斤(jin)(jin)(jin)，分別(bie)比對照魯棉(mian)(mian)(mian)(mian)(mian)(mian)(mian)研15號(hao)(hao)增產(chan)(chan)(chan)2.5%和(he)(he)(he)減產(chan)(chan)(chan)3.2%、6.4%。

    栽培技術要點：1.地(di)膜(mo)覆蓋4月中下旬、育苗移栽4月上(shang)旬播種。2.畝(mu)種植密度2000～3000株(zhu)。3.施(shi)足底肥(fei)，增施(shi)磷鉀肥(fei)，重(zhong)(zhong)施(shi)花(hua)鈴(ling)肥(fei)，后期注意(yi)噴施(shi)葉面肥(fei)。4.合理化控，多雨(yu)年份(fen)(fen)須化控4次(ci)，盛蕾期、初花(hua)期、花(hua)鈴(ling)盛期各1次(ci)，打頂后10天重(zhong)(zhong)噴1次(ci)。5.二(er)代棉鈴(ling)蟲一般發(fa)生年份(fen)(fen)不需防(fang)治(zhi)，三、四代棉鈴(ling)蟲酌(zhuo)情(qing)防(fang)治(zhi)1－2次(ci)；注意(yi)防(fang)治(zhi)盲蝽(chun)蟓、蚜蟲、紅蜘蛛等非鱗翅目害(hai)蟲。

    審定意見：該品(pin)種已(yi)取得農業(ye)轉基(ji)(ji)因生(sheng)物生(sheng)產應用(yong)安(an)全(quan)證書(shu)（轉基(ji)(ji)因生(sheng)物名稱為sGKz46（國欣棉8號(hao)）），符合(he)國家棉花(hua)品(pin)種審定標準，通過(guo)審定。屬(shu)轉抗蟲基(ji)(ji)因中(zhong)(zhong)早熟雜交(jiao)一代品(pin)種，適宜在河(he)北東南(nan)(nan)部、南(nan)(nan)部、中(zhong)(zhong)南(nan)(nan)部，山(shan)東北部，河(he)南(nan)(nan)北部、中(zhong)(zhong)部的黃河(he)流域棉區(qu)春播種植(zhi)，應嚴格按(an)照農業(ye)轉基(ji)(ji)因生(sheng)物安(an)全(quan)證書(shu)允許的范圍推廣。