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1.密度问题播种量过多,密度过大,是当前我省大豆单产不高的主要原因。由于用种量大,加上“拉拉稀”播种,种子播得不匀,豆苗过密,而且又积堆断条,苗与苗互相影响,幼苗发育不良,形成“一炷香”,影响了产量。据各地经验,大豆每亩10,000株左右较为合适。平肥地、扩杈能力强的品种,每亩应7,000～10,000株(1.7～1.8尺的行距,3寸1株或6寸双株。“群选一号”扩杈力很强,株距5寸较好)。
1. Density problems Seeding too much density is too large, the main reason for the current soybean yield in our province is not high. As with the large amount of seeds, with “La La dilute” sowing, uneven sowing seeds, pea seedlings are too dense, but also piled up broken, mutual influence of seedlings and seedlings, seedling development, the formation of a “sweet potato” affect Production. According to local experience, 10,000 or so soybean per acre is more appropriate. Planted fat, expanding the capacity of the strong varieties, per mu should be 7,000 to 10,000 (1.7 to 1.8 feet of row spacing, 3-inch 1 or 6-inch double strain. Inch better).