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为了研究磷、钾肥不同配比对紫花苜蓿种子产量及其构成因素的影响,试验对紫花苜蓿草地进行了不同的施肥处理,测定了种子产量、千粒重、小花数、结荚花序数、花序数、荚果数、种子数、生殖枝数、千粒重等产量构成因素,并对各处理的种子产量与其构成因素进行了方差分析。结果表明:磷酸二铵150 kg/hm2、硫酸钾150 kg/hm2处理的紫花苜蓿种子产量最高;不同施肥处理对小花数、结荚花序数、花序数、荚果数、种子数、生殖枝数均有一定影响;种子产量与生殖枝数呈显著正相关(P<0.05),而在各产量因子之间生殖枝数与结荚花序数、花序数呈显著负相关(P<0.05),花序数和结荚花序数呈显著正相关(P<0.05)。种子产量与结荚花序数和花序数呈显著正相关关系(R=0.93,R=0.91,P<0.05)。
In order to study the effects of different phosphorus and potassium fertilizers on seed yield and its components of alfalfa, different fertilization treatments were carried out on alfalfa grass. The effects of different fertilization treatments on the seed yield, 1000-grain weight, floret number, pod number, inflorescence number, The number of pods, the number of seeds, the number of reproductive branches, the weight of 1000-grain weight and other yield components. An analysis of variance was made on the seed yield and its components of each treatment. The results showed that the seed yield of alfalfa treated with 150 kg / hm2 of diammonium phosphate and 150 kg / hm2 of potassium sulfate was the highest. The number of floret, the number of inflorescence, the number of inflorescence, the number of seeds, the number of seeds and the number of reproductive branch (P <0.05). However, there was a significant negative correlation between the number of reproductive branches and the number of pod flowers and inflorescences (P <0.05), the number of inflorescences And pod flower number was significantly positive correlation (P <0.05). There was a significant positive correlation between seed yield and the number of inflorescence and inflorescence (R = 0.93, R = 0.91, P <0.05).