农作物适时摘顶,不仅能调整株型,协调养分流向,而且能提高作物产量,改进作物品质。 大豆 大豆顶芽生长力强,耗用养分多,适时摘掉其顶芽能促进增产,尤其对土壤肥力较高、易倒伏的大豆,增产效益更为显著。据资料表明,一般平均增产幅度为25％左右。 在大豆(特别是对于有徒长或贪青晚熟趋势的大豆)生长高峰或初花期,摘去主茎顶端1.5～3厘米嫩头,使顶端生长受到抑制,让养分集中供给生殖生长,促进多开花多结荚。同时,还可促使植株矮壮,增强抗逆性。 大豆摘顶要做到“三宜”、“三不宜”。即:宜早不 Timely crop tops, not only can adjust the plant type, to coordinate the flow of nutrients, but also can improve crop yields, improve crop quality. Soybean top bud growth and strong, more nutrients, timely removal of its top bud can promote the increase, especially for higher soil fertility, lodging easily yield more significant benefits. According to statistics, the average increase rate of about 25%. In soybeans (especially for legumes or late-blooming late-season soybean) peak growth or early flowering, picking off the top of the main stem 1.5 to 3 cm tender, so that the top of the growth is inhibited, so that nutrients concentrated for reproductive growth and promote more flowering More pods. At the same time, but also to promote plant short stature, enhance resistance. Soybean top to be “three should”, “three should not.” That is: should not be early