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在田间试验条件下,以珍珠豆型花生品种吉花4号和普通型花生品种吉花19为研究材料,研究不同单粒精播密度对花生成苗情况、植株性状和产量效益的影响,确定两者适宜的精播密度。结果表明:随种植密度的增加,两花生品种的主茎高和侧枝长表现相对稳定,分枝数、单株结果数和单株荚果产量相应降低,饱果率、果重、荚果产量和产值则呈先增加后降低变化趋势。在密度18.00万穴/hm~2时,两花生品种荚果产量最高,较对照分别增产7.73%和8.05%,均达到极显著水平,且节种20%;在密度15.75万穴/hm~2和18.00万穴/hm~2时总效益最大,较对照分别增收11.13%和11.71%。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4 744.18 kg/hm~2,相应密度为18.69万穴/hm~2;普通型吉花19最高产量是5 982.02 kg/hm~2,相应密度为19.19万穴/hm~2,较吉花4号高产、高效、耐密。
Under the field experiment conditions, the pea variety pea variety “Jihua No.4” and the common peanut variety “Jihua 19” were used to study the effects of different individual dispersal density on peanut seedling emergence, plant characters and yield and benefit Both suitable precision broadcast density. The results showed that with the increase of planting density, the main stem height and collateral length of two peanut varieties were relatively stable. The number of branches, the number of single plants and the yield per plant decreased correspondingly. The full fruit yield, fruit weight, pod yield and value Then increased first and then decreased. At the density of 180,000 acre / hm ~ 2, the peanut varieties had the highest yield of pod, which increased 7.73% and 8.05% respectively compared with the control, reaching extremely significant level and 20% The total benefit was 180,000 acupoints / hm ~ 2, which increased by 11.13% and 11.71% respectively compared with the control. In this experiment, the highest yield of pearl jelly type Jihua No.4 was 4 744.18 kg / hm ~ 2 and the corresponding density was 186,900 points / hm ~ 2 by density-yield regression equation. The highest yield of common type Jilin 19 was 5 982.02 kg / hm ~ 2, the corresponding density of 191,900 holes / hm ~ 2, compared with high yield 4, high efficiency, tight tolerance.