辣椒假植死苗原因及防止措施

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一些菜农为了使辣椒提早上市,将辣椒提早到冬前播种,下年假植一段时间,再定植到大田。假植(也称两段育苗)通过根伤刺激辣椒苗生出大量新根,从而形成众多根系。假植的辣椒苗粗壮矮健,抗逆力增强,已成为辣椒增产的一项新而重要的栽培技术。但是在生产中也出现僵苗甚至死苗现象。这是什么原因呢?一、苗体老化。主要是第一段育椒苗密度过大,营养条件差或假植过迟引起苗子瘦弱纤细,植株过早木质化,体内碳氮比过高。再就是假植后体内缺氮迟迟不发新根,不长新叶,被称之“小老苗”。为了防止苗体老化,要适当稀播,适龄假植,每亩大田备子床(第一阶段的苗床)4平方米,假植期为3叶期,即3月上旬左右,假植规格为7厘米×7厘米。 Some farmers in order to make the pepper market early, the peppers early sowing before winter, planting for some time next year, and then planted to the field. Implants (also known as two sections nursery seedlings) through the root canal injury pepper sprouts give birth to a large number of new roots, thus forming a large number of roots. The planted pepper seedlings are strong and short, and their anti-retrogradation strength has been enhanced. This has become a new and important cultivation technique for pepper production. However, there is also the phenomenon of dead or dead seedlings in production. What is the reason? First, seedling aging. Mainly the first paragraph of pepper seedling density is too large, poor nutritional conditions or fake late planting caused thin thin slender, premature lignification of plants, the body of high carbon and nitrogen ratio. Then there is no delay after the new nitrogen in the body after implantation of new roots, not long new leaves, is called “small seedling ”. In order to prevent the seedling from aging, it is necessary to properly sow the seedlings of the right age and age. The seedling bed of Daejeon (seedbed of the first stage) per mu is 4 square meters and the leaf-leave stage is 3-leaf stage, that is about early March. 7 cm × 7 cm.
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