Method for conducting nutrient and water management in celery seedling stage

Abstract

The invention relates to a method for conducting nutrient and water management in the celery seedling stage. The method is characterized by including the following process steps: (1) frequently keeping bed faces wet after planting before seedlings are emerged; watering is not needed normally after seedling beds are fully watered with bottom water due to the fact that the seedling beds with simple shading objects are small in evaporation capacity; seedling beds are required to be watered with a small amount of water in the morning or at night due to the fact that the seedling beds without shading objects are high in air temperature and large in evaporation capacity; watering is normally carried out every one or two days; watering is not needed normally when seedlings grow in early spring or winter to prevent ground temperature reduction; (2) in the period from seedling emergence to rough leaf unfolding, though seedlings suck a small amount of water, watering is required to be carried out frequently; the seedling beds are kept wet, and the seedlings are prevented from being burnt by burning sun; watering is carried out every two or three days with a small amount of water; (3) when three or four main leaves of the seedlings are grown, root systems begin to expand, the water absorbing capacity is gradually strengthened, and the watering frequency is gradually lowered; watering is carried out on the seedling beds when the surfaces of the seedling beds are dry to promote the development of the root systems and quicken spire differentiation; if overmuch water is used for watering, excessive growth of the seedlings is easily caused, and cultivation of strong seedlings is not facilitated; after two to three main leaves are grown, two or three times of topdressing is carried out in cooperation with watering, and the topdressing amount follows the principles of small amount and high frequency; normally 0.25 kg-0.5 kg of urea or three-nutrient compound fertilizers are applied to each seedling grow bed in a flushing mode; according to growth conditions of the seedlings, leaf fertilizers can be applied in cooperation with aphid prevention in the seedling stage one or two times; when four to five leaves of the celery seedlings are grown and the celery heights are about 15 cm, field planting can be carried out. By means of the method, the problems that at present, traditional celery nutrient and water management and seedling emergence are difficult, the seedlings grow slowly, and even seedling death is caused are solved.

Description

technical field [0001] The invention relates to the field of agricultural planting, in particular to a method for managing fertilizer and water at the seedling stage of celery. Background technique [0002] At present, the traditional celery fertilizer and water management is difficult to emerge, the seedlings grow slowly, and even the phenomenon of dead seedlings occurs. Contents of the invention [0003] In order to solve the deficiency in the current agricultural planting technology, the invention invents a method for managing fertilizer and water at the seedling stage of celery. [0004] The present invention is for solving the problems of the technologies described above, and the technical scheme that takes is, a kind of method that celery seedling stage carries out fertilizer and water management, and its special feature is to comprise following process: [0005] 1. After sowing, the front of the seedlings should always be kept moist; the seedlings with simple shade...

AI Technical Summary

Problems solved by technology

[0002] At present, the traditional celery fertilizer and water management is difficult to emerge, the seedlings grow slowly, and even the phenomenon of dead seedlings occurs