论文部分内容阅读
一、中耕松土:胡豆一般在苗高3—4寸时行第一次中耕松土,春节前后行第二次中耕松土。这样既可增加土壤中的空气,又可清除杂草与胡豆争光争肥争水。能促进根系,根瘤菌和分枝的生长,为多结荚创造条件。二、补施肥料:胡豆需氮肥较少,需磷钾肥较多。但对一般生长不旺的胡豆,在苗期(五叶前)每亩用尿素2—3公斤,过磷酸钙5—10公斤兑水浇施,有利形成根瘤和早发壮枝;胡豆现蕾期,本身根瘤固氮能力减弱,结合抗旱亩施尿素3—5公斤,对保蕾、保花、保荚都有良好作
First, cultivating loose soil: beans usually 3-4 cm in height when the line of cultivating loose soil, before the Spring Festival second line of cultivating loose soil. This will not only increase the air in the soil, but also eliminate weeds and fight over the competition for fertilizer and water. Can promote the growth of roots, rhizobia and branches, to create conditions for multi-node pods. Second, make-up fertilizer: Soybeans need less nitrogen, more phosphorus and potassium. However, the general growth is not good walnuts, seedlings (before five leaf) with urea 2-3 kg per mu, superphosphate 5-10 kg watered against the water, the formation of nodules and early growth of strong branches; Period, its own ability to nodule nitrogen fixation weakened, combined with drought 3-5 acres of urea applied to protect the bud, Paul flower, Paul pod has a good job