CAJ | 학술논문

采用3因素裂区设计 ,研究4个甜秆饲草高粱品种在不同种植密度和刈割次数下的植株性状及产量的差异.结果表明 :在饲草高粱生育进程中 ,无论刈割1次还是2次 ,14万株·hm-2高密度种植的鲜草产量总是高于10万株· hm -2的低密度处理 ;增加刈割次数可有效地增加甜高粱的总产草量.采用植株高大茎秆粗壮的623A × 126-524、高密度14万株·hm -2种植和一生刈割2次是本试验条件下产草量高的最佳组合 ,该组合鲜草产量可以达到84 039. 67 kg·hm -2 ,且在刈割1次的情况下该杂交组合的籽粒产量也达到最大.另2个甜秆饲草杂交高粱鲜草产量都极显著高于甜高粱1号.以上结论可以为选用合适的甜高粱品种进行合理密植、提高产草量从而促进饲草利用提供强有力的技术支撑.
채용3인소렬구설계 ,연구4개첨간사초고량품충재불동충식밀도화예할차수하적식주성상급산량적차이.결과표명 :재사초고량생육진정중 ,무론예할1차환시2차 ,14만주·hm-2고밀도충식적선초산량총시고우10만주· hm -2적저밀도처리 ;증가예할차수가유효지증가첨고량적총산초량.채용식주고대경간조장적623A × 126-524、고밀도14만주·hm -2충식화일생예할2차시본시험조건하산초량고적최가조합 ,해조합선초산량가이체도84 039. 67 kg·hm -2 ,차재예할1차적정황하해잡교조합적자립산량야체도최대.령2개첨간사초잡교고량선초산량도겁현저고우첨고량1호.이상결론가이위선용합괄적첨고량품충진행합리밀식、제고산초량종이촉진사초이용제공강유력적기술지탱.
This study used 4 sweet straw forage sorghum as the experiment materials in a three factor split plot experi-ment to explore the effect of planting density and moving times on sorghum yield and morphology .The results showed that :in the process of Forage Sorghum growth ,the yield of fresh grass in 14 myriad plants·hm -2 was always higher than 10 myriad plants·hm-2 regardless of mowing 1 times or 2 times;increasing mowing times could effectively add cu-mulative yield of grass of sweet sorghum .Using 623A × 126-524 variety with tall plant stem stout ,high density of 14 myriad plants·hm -2 and mowing 2 times was the best combination of high yield grass under the experimental condi-tions ,the fresh grass yield in the combination could reach 84039.67 kg·hm -2 ,the grain yield of this variety in mowing 1 times also reached the maximum .The fresh grass yield of 2 sweet straw forage sorghum hybrid were significantly higher than that of sweet sorghum No 1. All of the results provide powerful technical support for the selection of suit-able sorghum varieties which can be used to rational close planting ,improve the grass yield .