Leaf lettuce planting method

Abstract

The present invention belongs to the field of vegetable planting, and in particular relates to a leaf lettuce planting method. According to the present invention, by virtue of processes of soil preparing and plot piling, seed selecting and sowing, seedling stage managing and field managing, the leaf lettuce is produced; by combining reasonable treatment on a cultivating base during basal dressing and fertilizing, the cultivating base is enabled to meet an automatic planting technology, thereby lowering the planting cost; by using a method combining a soil fertilizer with a foliage fertilizer, the demand on nutrients for the leaf lettuce growth is met, and the fertilizer diversity is also ensured, thereby improving the quality of the leaf lettuce; by performing high temperature treatment on the seed, disease resistance and germination speed of the seed are improved, thereby shortening the germination time; and by combining reasonable managing steps, the nutrients are enriched, thereby improving the self disease resistance, and the influence of disease and pest on the leaf lettuce production and quality is reduced, and the quality and the production of the leaf lettuce are further enhanced.

Description

technical field [0001] The invention belongs to the field of vegetable planting, and in particular relates to a planting method of lettuce. Background technique [0002] Lettuce contains a lot of nutrients such as carotene, vitamin B1, vitamin E, vitamin C and dietary fiber. It has the health care effect of lowering cholesterol, clearing dryness and moistening lung. Under the upsurge of eating raw vegetables, the demand for lettuce is increasing, and people's requirements for the quality of lettuce are getting higher and higher. [0003] Raw lettuce retains nutrients to a large extent, but the quality of lettuce, especially whether it has diseases and insect pests, has a great impact on human health. If it contains diseases and insect pests, these diseases and insect pests cannot be cleaned by simple cleaning. And remove, then, when lettuce is eaten raw, pests and diseases enter the human body through the esophagus, and the damage to the human body can be imagined. In tradi...

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Problems solved by technology

[0003] Raw lettuce retains nutrients to a large extent, but the quality of lettuce, especially whether it has diseases and insect pests, has a great impact on human health. If it contains diseases and insect pests, these diseases and insect pests cannot be cleaned by simple cleaning. And remove, then, when lettuce is eaten raw, pests and diseases enter the human body through the esophagus, and the damage to the human body can be imagined. In traditional planting techniques, the base fertilizer of lettuce is usually 5000kg of manure per mu and 40kg of diammonium phosphate. , 20kg of urea, 20kg of potassium sulfate, 200-300kg of plant ash, and more frequent topdressing, mainly urea and pesticides. Due to the high frequency of single application of urea and pesticides for a long time, the organic matter content and microbial content in the soil decreased, resulting in lettuce. Susceptible to diseases and insect pests, and then reduce the quality of lettuce. In addition, the growth and development of lettuce is easily affected by the environment, so it will cause uneven emergence, uneven seedling size, long seedling period after transplanting, and poor growth of leaves and plants. It is not conducive to the production of lettuce with quality and quantity

[0004] In the prior art, Patent No. 201410642763.6 discloses a high-quality and high-efficiency cultivation technology of lettuce lettuce in the open field, wherein, seedling cultivation is to mix peat, vermiculite, and perlite in a ratio of 9:3:1 as a substrate, and then mix them Put 128-hole trays, one seed per hole, and then grow seedlings in a smart greenhouse. This method is conducive to the germination of seeds, but the treatment is complicated and the cost is high. Among them, the field management is to water the seedlings 7-10 days after planting. , and follow the water with 5-8kg / mu of urea. When the leaves start to condense, start watering and fertilizing, and apply 5-10kg of nitrogen, phosphorus, and potassium per acre to enter the peak growth period. Combined with watering and chasing the third fertilizer , 5kg of urea, 5kg of potassium fertilizer or 7-10kg of nitrogen, phosphorus and potassium fertilizer per mu. In the later stage of growth, frequent watering is required, and foliar fertilizers such as potassium dihydrogen phosphate, calcium chloride or other calcium fertilizers are sprayed. Due to frequent fertilization, the planting cost is increased and the planting soil is easily polluted. Therefore, it is not conducive to the promotion of lettuce planting technology

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