种植密度与氮肥对黄秋葵叶片产量和品质的影响

The Effect of Planting Densities and N Fertilizer on the Leaf Yield and Quality of Okra

研究密度和氮肥两因子对黄秋葵018和021品系叶片产量和品质的影响。总体来说,种植密度对黄秋葵叶片产量、茎杆产量和地上生物产量的影响呈现一致的规律。经显著性分析表明,018品系在高密度(即行株距40cm×30cm)下最佳,叶片产量达到3211.0kg/hm2,在低密度(即行株距60cm×50cm)次之,叶片产量达2860.6kg/hm2,中密度(即行株距50cm×40cm)最差;密度对021品系的差异不显著;氮肥对018和021品系叶片产量差异不显著;018和021品系的茎叶比随氮肥水平提高而变小。整体来说,生产上采用40cm×30cm的种植密度和375.0kg/hm2的氮肥水平可获得最大产量和最好的品质。

This experiment was studied the effect of planting densities and application quantity N fertilizer on the leaf yield and quality of line 018 and line 021 of okra. Generally speaking ,there was similar effect of planting densities on the leaf yield,stem yield and dry matter yield above the ground of line 018 and line 021. AS for line 018,statistic analysis showed that the high planting density （treatment with 40cm between rows and 30cm within rows ）was the best treatment,and the leaf yield was 3211.0 kg/hm^2,and the low planting densities （treatment with 60cm between rows and 50cm within rows） was the second,and the leaf yield was 2860.6kg/hm^2（p〈0.05）,and the mean planting densities（treatment with 60cm between rows and 50cm within rows）was the worst. But there was no significant difference between planting densities for line 021. The result showed that ration of stem to leaf was lower and lower with the increasing of application quantity N fertilizer when the application quantity nitrogen fertilizer was 375.0-937.5kg/hm^2. In a word,applying high planting density （treatment with 40cm between rows and 30cm within rows） and N Fertilizer with 375.0kg/hm^2 have the most leaf yield and the best quality.