How to manage overwintering spinach? Key points of spinach cultivation techniques
How to manage overwintering spinach? Please explain and guide. The management of overwintering spinach can refer to the following list: 1. Spinach overwintering period management: From when spinach stops growing until it turns green again in the following spring is the overwintering period. To prevent cold and drought damage, a freezing water can be applied before the soil freezes; if fertilization is insufficient, urine water can be mixed in. After the soil freezes, it can be covered...
How to manage overwintering spinach? Please explain and guideThe management of overwintering spinach can refer to the following list:
1. Spinach overwintering period management:From when spinach stops growing until it turns green again in the following spring is the overwintering period. To prevent cold and drought damage, a freezing water can be applied before the soil freezes; if fertilization is insufficient, urine water can be mixed in. After the soil freezes, horse manure or barnyard manure can be spread to protect the seedlings through winter. Before the plants turn green again, choose a clear and warm day, and after the frost has melted, splash fresh urine, 1000-2000 kg per mu, finishing by 3-4 p.m.
2. Management of overwintering spinach during the vigorous regrowth period:In early March of the following year, spinach begins to turn green and grow. Because the temperature is still low at this time, if soil moisture is good, do not water for the time being, and hoe to conserve moisture; if soil moisture is poor and the temperature rises quickly, water once, with the amount preferably small rather than large. However, saline-alkali land can be watered appropriately to leach salts. For windbreak beds and sandy loam soil, where temperature rises quickly, water appropriately earlier.
After spinach begins vigorous growth, the demand for fertilizer and water surges. During this period, keep the soil moist and do not let it dry out. Fertilize and water promptly to promote vegetative growth and delay the bolting period. Generally, apply 15-20 kg of urea per mu. Water after fertilizing; with sufficient fertilizer and water, spinach grows quickly and can be harvested in 10-15 days. Adopting windbreak and flat film mulching (mulching for 7-10 days) cultivation methods in early spring can achieve the goals of earlier marketing and high yield.
3. Pest and disease control for overwintering spinach:The main pests and diseases of overwintering spinach include downy mildew, anthracnose, viral disease and aphids. For downy mildew and anthracnose, at the early stage of onset, spray with 75% chlorothalonil 600 times solution, 25% metalaxyl 700-800 times solution or 40% fosetyl-aluminum wettable powder 200-300 times solution. For viral disease, in addition to crop rotation, aphids and other virus-transmitting vectors should also be controlled promptly. Aphids can be controlled with pesticides such as imidacloprid.
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