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冬季日光温室蔬菜一些需要在春节前上市的品种,如彩椒、番茄等转色的品种,需在夏季育苗。夏季蔬菜育苗关键在于如何创造一个良好的育苗环境,克服高温多湿或高温干旱的不利气候因素,保证种子萌发和幼苗正常生长。近年来,我们试验推广了夏季小拱棚遮荫避雨育苗法,取得了良好的效果。现将技术简述如下: 一、营养土的配制夏季育苗地温高了易烧根,苗期需养分很少,最好在育苗时不要施用有机肥,更不要施用化学肥料。营养土最好用肥沃的大田土,小麦、玉米等粮田土,不用菜园土,以避免将病原物、虫源带入苗床。当幼苗长到三叶一心后浇灌营养液,以满足苗子生长所需要的养分。营养液的配制:尿素0.5kg、磷酸二氢钾0.8 kg,对水1 000 kg,若苗子叶色较淡,1 000kg水中可加尿素0.8 kg,结合浇水追施营养液。
Winter solar greenhouse vegetables Some varieties need to be listed before the Spring Festival, such as sweet pepper, tomato and other color varieties, need to nursery in the summer. The key to summer vegetable nursery lies in how to create a good nursery environment, overcome unfavorable climatic factors such as high temperature and humidity or high temperature and drought, and ensure seed germination and seedling growth. In recent years, we experimented to popularize the law of shading shelter and nursery in summer and achieved good results. Now the technical briefings are as follows: First, the preparation of nutrient soil Summer nursery ground temperature is high, easy to burn root, seedling nutrient little, it is best not to apply organic fertilizer in nursery, not to use chemical fertilizers. Nutrient soil is best to use fertile fields of soil, wheat, corn and other grain soil, do not garden soil, in order to avoid the pathogen, insect source into the seedbed. When the seedlings grow to clover heart after pouring nutrient solution to meet the growth of seedlings needed nutrients. Nutrient solution preparation: urea 0.5kg, potassium dihydrogen phosphate 0.8kg, water 1000kg, if the seedling leaf color lighter, 1000kg of water can add urea 0.8kg, combined with water topdressing nutrient solution.