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在田间试验条件下,以吉花4号、吉花19花生品种为材料,研究了密度对花生成苗情况、植株性状和产量的影响。结果表明:随种植密度增加,两品种的分枝数、单株结果数和单株荚果产量均相应下降,饱果率、果重、百果重和百仁重呈先增加后降低变化趋势,出苗率、保苗率、主茎高、侧枝长和出仁率则表现相对稳定。本试验利用密度—产量回归方程得到珍珠豆型吉花4号最高产量是4838.26kg/hm~2,相应密度为13.69万穴/hm~2;普通型吉花19最高产量是6247.59kg/hm~2,相应密度为16.15万穴/hm~2,较吉花4号高产且适合密植。
Under the field experiment, the effects of planting density on the seedling emergence, plant characters and yield of peanut were studied using the varieties of “Jihua 4” and “Jihua 19”. The results showed that with the increase of planting density, the number of branches, the number of single plants and the yield per plant of two cultivars decreased correspondingly. The full fruit rate, fruit weight, fruit weight and berry weight increased first and then decreased, The emergence rate, seedling protection rate, main stem height, lateral branch length and kernel rate were relatively stable. In this experiment, the highest output of pearl jelly type Jihua No.4 was 4838.26kg / hm ~ 2 and the corresponding density was 136,900hug / hm ~ 2 by using density-yield regression equation. The highest yield of common type Jilin 19 was 6247.59kg / hm ~ 2, the corresponding density of 161,500 points / hm ~ 2, compared with high yield 4 and suitable for close planting.