CAJ | 학술논문

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。
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.