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近年来,棉田套种春箭筈豌豆逐渐成为我县控制蚜害的重要手段,效果日趋明显,面积逐年增加,到1979年,套种面积达2.8万亩。棉田套种春箭筈豌豆是生物防治和农业防治相结合,创造生态环境,招引、繁殖天敌,控制蚜害的有效形式,控蚜时间长达30—60天。套种的箭筈豌豆每亩可产鲜草千斤左右,折合纯氮6.9斤,掩青后增加了棉田的有机肥料。据敬安公社农科站1977年试
In recent years, cotton interplanted spring arrowhead peas gradually become an important means of control of aphids in our county, the effect has become increasingly evident, the area increased year by year, to 1979, the intercropping area of 2.8 hectares. Cotton field intercropping Spring Pea is a biological control and agricultural control combined to create an ecological environment, attracting and breeding natural enemies, effective control of aphids harm form aphids control up to 30-60 days. The intercropping arrowhead peas per acre can produce about 1000 kg of fresh grass, equivalent to 6.9 pounds of pure nitrogen, cover the green after the increase of cotton organic fertilizer. According to Jing An agricultural station 1977 trial