Since March 2018, a one-month soil and water quality survey has been carried out in yuanmou tomato jincheng comprehensive technical service area, involving 6 large areas and 49 small areas, with a total of 50 soil samples and 49 water quality samples.

Soil sample collection method

1. According to the distribution area of the main root system of tomato planting, 3-20cm;

2. Stop fertilization for at least half a month and collect tomatoes under planting ridge;

3. Collect the samples according to the regional 5-point method, divide the samples into four parts, air dry them naturally, and grind them through the 20-mesh sieve;

4. Send to a quality inspection institution certified by the state for inspection.

Specific soil sampling methods, sample preparation and testing: soil sampling and testing

Comprehensive analysis of soil and water quality

Question:

1, most of the soil is sandy soil, sand + clay.

2. Generally alkaline.

3. Low organic matter content.

4. Low beneficial microflora.

5. High content of calcium, magnesium, phosphorus, iron and copper.

6, poor water quality, serious pollution, not suitable for people, livestock drinking; Fertilization, injection effect is poor.

7, the growth is not normal (dead trees, yellow, flowers and fruits), disease prone to occur (green disease, etc.).

The reason:

The nature of the soil itself.

(2) is fixed component more.

(3) fertilization is not appropriate. (untested soil formula fertilization, improper matching of nutrients, excessive use of fertilizer.)

(4) high PH of irrigation water, poor water quality (Ec high) is not the most suitable range for normal tomato growth, fertilizer, pesticide use effect is poor (antagonism and high PH influence absorption).

Where does the soil problem come from

Why do we use so much NPK on our land?

Why do our soils always lack nutrients, fertility and activity?

What is the problem with the soil?

What is the relationship between fertilizer and soil?

Is the NPK combination not suitable for our land? Actually otherwise, the problem of food security has been the major problem we face, cause we have to ask the land for more and more fertilizer, surplus leads to large areas of land NPK content and the crop is not how much, technology does not pass, because our fertilizer nutrients is the soil, but were soil seepage, "full of soil, hungry thin crops" crop absorption is very few.

You get what you sow, you get what you sow, the land is inexhaustible, there is no need to worry, this is the traditional farming idea. But now, all of a sudden, our soil is in trouble. Our soil has suddenly become barren with excessive levels of heavy metals, hardening, salinization and pollution.

The use of fertilizers is increasing, and the variety of crops in which they are applied is increasing. The role of fertilizers in increasing crop yields is well recognized. At the same time, the application of fertilizer will have a certain damage to the soil, reduce soil fertility. The problem of soil mainly lies in unreasonable planting structure, unreasonable fertilization method and unreasonable protection method.

The solution of yuanmou soil census

Soil improvement is a long-term process, only from the formula to change a drop in the bucket, the key is to soil and adjust water quality

Aiming at the difficulties and pain points in yuanmou's soil, water quality and planting, in order to realize the sustainable development of yuanmou tomato, the way of walking on two legs is proposed in 2018:

1. Maintain the original production and planting mode, adopt package type, solve the problem of blind planting, soil measurement and water measurement planting by growers, follow up the whole process, adjust at any time according to the weather, growth and variety differences, reflect the value of jincheng technical service, rather than sell products, ensure the increase of output and quality, and gradually improve the soil structure.

2. Continue to explore soilless cultivation mode in facilities to reduce the influence and restriction of environment, soil and water quality on planting. Prepare for the extension of soilless facilities in 2019. At the same time, we also try the order agricultural mode, so that yuanmou tomato planting can find a reverse mode from the end of planting to the end of consumption, so that planting and products can be differentiated and income can be differentiated.