苏中地区硼肥与油菜籽同播效果研究

Study on Effect of Co-sowing Boron Fertilizer with Rapeseed in Central Jiangsu

对苏中地区硼含量差异较大的仪征市真州镇和扬州市江都小纪镇开展了不同用量的硼肥与油菜籽同播试验,分析了专用硼肥与油菜籽同播对油菜生长、产量的影响,明确了缺硼土壤油菜籽与硼肥同施效果并确定了硼肥适宜用量,以期为种肥同播技术的推广提供依据。试验结果表明,硼肥种肥同播对油菜籽出苗没有不利影响,同播可以有效促进油菜营养生长和生殖生长,提高生物量,延长花期,增加角果数和每果粒数,降低空瘪籽率,从而提高油菜产量。在硼肥缺乏地区(土壤有效硼含量0.5 mg/kg左右),同播施硼量以9 kg/hm^(2)最适宜;而在硼肥极缺地区(土壤有效硼含量0.2 mg/kg左右),同播硼肥量以13.5 kg/hm^(2)较为适宜。

The experiments of boron fertilizer and rapeseed were carried out in Zhenzhou Town of Yizheng City and Xiaoji Town of Jiangdu District,Yangzhou City with different boron content in central Jiangsu Province.The effects of co-sowing boron fertilizer with rapeseed on the growth and yield of rapeseed were studied.The effect of co-application of boron fertilizer and rapeseed in boron-deficient soil was clarified,and the appropriate amount of boron fertilizer was determined,which provided the basis for the popularization of the co-sowing technique between rapeseed and boron.The results showed that the co-sowing of boron fertilizer and rapeseed had no adverse effect on rapeseed seedlings.The co-sowing could effectively promote the nutrient growth and reproductive growth of rapeseed,increase the biomass,prolong the flowering period,increase the number of kernels and the number of kernels per corner,reduce the rate of empty flat seeds and improve rapeseed yield.In the lack of boron fertilizer (soil effective boron content of about 0.5 mg/kg),the boron content of 9 kg/hm^(2) was the most suitable.In the area where boron fertilizer was extremely scarce (the soil has an effective boron content of about 0.2 mg/kg),the same boron fertilizer content of 13.5 kg/hm^(2) was more appropriate.