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通过试验 ,明确了皖豆 2 0的适宜播期为麦收后至 6月 15日 ,最迟不能晚于 7月 10日。皖豆 2 0分枝潜力大 ,自我调节能力强 ,适宜密度为 15～ 30万株 /hm2 ,最佳为 2 2 .5～ 30万株 /hm2 ,产量峰值在 2 6 .3万株 /hm2 。适宜播量为 75～ 10 5kg/hm2 ,最佳播量 75kg/hm2 。百克土中含P2 O52mg以上时 ,可不施P肥 ,富K的黄泛淤土无需施用K肥 ,上茬小麦每公顷产量在 6 0 0 0kg以上的田块 ,施N肥不增产。水分是影响该品种产量的重要因素 ,要特别注意防旱排涝
Through the test, it is clear that the suitable sowing date of Wan bean 20 is from wheat harvest to June 15, and no later than July 10 at the latest. Wandou 20 had a great potential for branching and strong self-regulation with a suitable density of 150,000 to 300,000 plants per hectare and an optimum of 225,000 to 300,000 plants per hectare with a peak production of 26,300 plants per hectare . Sowing rate of 75 ~ 105kg / hm2, the best sowing rate of 75kg / hm2. 100 grams of soil containing P2 O52mg or more, can not apply P fertilizer, K-rich yellow flood of soil without applying K fertilizer, the yield of wheat per hectare above 60000kg of plots, N fertilizer does not increase production. Water is an important factor affecting the yield of this variety, with special attention to drought and drainage