河北农业科学
河北農業科學
하북농업과학
JOURNAL OF HEBEI AGRICULTURAL SCIENCES
2013年
6期
13-15,31
,共4页
马维军%任爱民%韩秋成%张玉娟%崔明晖%尹国%王双贵
馬維軍%任愛民%韓鞦成%張玉娟%崔明暉%尹國%王雙貴
마유군%임애민%한추성%장옥연%최명휘%윤국%왕쌍귀
种植密度%留叶枝%三系杂交棉%产量构成%产量
種植密度%留葉枝%三繫雜交棉%產量構成%產量
충식밀도%류협지%삼계잡교면%산량구성%산량
Plant density%Retention of vegetative branches%Hybrid cotton based on cytoplasmic male-sterility system%Yield components%Yield
以转基因抗虫三系杂交棉邯杂429为试验材料,设两因素(种植密度、留叶枝方式)三水平试验设计,其中,种植密度水平为2.25万株/hm2、3.75万株/hm2和5.25万株/hm2,留叶枝方式水平为不留叶枝(常规整枝, CK)、留2个优势叶枝和留全部叶枝,研究不同种植密度与留叶枝方式对棉花产量构成和产量的影响。结果表明:保留叶枝能够提高棉花的霜前花率,促进棉花早熟,但在不同的密度种植时棉产量构成和产量效应不同:低密度栽培时,保留叶枝能够显著提高单株铃数和霜前花率,最终使产量略有提高;中等密度栽培时,保留叶枝会显著降低单铃重,最终导致产量降低,其中留全部叶枝的棉花减产显著;高密度栽培时,保留叶枝会降低棉花单铃重,其中留2个优势叶枝棉花的单铃重降低显著,最终导致产量略有降低。在三系杂交棉简化整枝栽培管理中,采用种植密度3.75万株/hm2、留2个优势叶枝方式栽培棉花产量最高,籽棉产量为5383.6 kg/hm2。
以轉基因抗蟲三繫雜交棉邯雜429為試驗材料,設兩因素(種植密度、留葉枝方式)三水平試驗設計,其中,種植密度水平為2.25萬株/hm2、3.75萬株/hm2和5.25萬株/hm2,留葉枝方式水平為不留葉枝(常規整枝, CK)、留2箇優勢葉枝和留全部葉枝,研究不同種植密度與留葉枝方式對棉花產量構成和產量的影響。結果錶明:保留葉枝能夠提高棉花的霜前花率,促進棉花早熟,但在不同的密度種植時棉產量構成和產量效應不同:低密度栽培時,保留葉枝能夠顯著提高單株鈴數和霜前花率,最終使產量略有提高;中等密度栽培時,保留葉枝會顯著降低單鈴重,最終導緻產量降低,其中留全部葉枝的棉花減產顯著;高密度栽培時,保留葉枝會降低棉花單鈴重,其中留2箇優勢葉枝棉花的單鈴重降低顯著,最終導緻產量略有降低。在三繫雜交棉簡化整枝栽培管理中,採用種植密度3.75萬株/hm2、留2箇優勢葉枝方式栽培棉花產量最高,籽棉產量為5383.6 kg/hm2。
이전기인항충삼계잡교면함잡429위시험재료,설량인소(충식밀도、류협지방식)삼수평시험설계,기중,충식밀도수평위2.25만주/hm2、3.75만주/hm2화5.25만주/hm2,류협지방식수평위불류협지(상규정지, CK)、류2개우세협지화류전부협지,연구불동충식밀도여류협지방식대면화산량구성화산량적영향。결과표명:보류협지능구제고면화적상전화솔,촉진면화조숙,단재불동적밀도충식시면산량구성화산량효응불동:저밀도재배시,보류협지능구현저제고단주령수화상전화솔,최종사산량략유제고;중등밀도재배시,보류협지회현저강저단령중,최종도치산량강저,기중류전부협지적면화감산현저;고밀도재배시,보류협지회강저면화단령중,기중류2개우세협지면화적단령중강저현저,최종도치산량략유강저。재삼계잡교면간화정지재배관리중,채용충식밀도3.75만주/hm2、류2개우세협지방식재배면화산량최고,자면산량위5383.6 kg/hm2。
Taking transgenic Bt hybrid cotton Hanza 429 based on cytoplasmic male-sterility system as the test material, three different plant densities ( 2.25 ×104, 3.75 ×104 and 5.25 ×104 plants/hm2 ) were treated without vegetative branches ( CK ) or with two or all vegetative branches to study the effects on the yield components and yield of cotton.The results showed that the retention of vegetative branches could promote the rate of pre-frost lint cotton, but the effect on yield components and yield under different plant densities was different , under low plant density, the retention of vegetative branches significantly promoted the number of the bolls per cotton and the rate of pre-frost lint cotton, finally increased the yields.Under middle plant density, the retention of vegetative branches significantly decreased the boll weight, finally decreased the yields, the retention of all vegetative branches significantly decreased the yields.Under high plant density, the retention of vegetative branches decreased the boll weight, the retention of two vegetative branches significantly decreased the boll weight, finally decreased the yields slightly.Accordingly, the yield of the retention two vegetative branches under middle plant density ( 3.75 ×104 plants/hm2 ) in hybrid cotton based on cytoplasmic male-sterility system simplified pruning cultivation was the highest, the seed cotton yield was 5 383.6 kg/hm2.