The method of combating weeds and enhance the growth of seedlings in forest nurseries

 

(57) Abstract:

The invention relates to agriculture and can be used for growing large forest planting material. Immediately after planting to produce mulch special substrate thickness of 5 cm Substrate is obtained by mixing a pre-neutralized with lime materials hydrolytic lignin with sand. The method can reduce the infestation landings undesirable herbaceous vegetation, to optimize soil ecology at the lowest cost of material and technical means, to prevent adverse environmental impacts and to dispose of large-scale industrial waste. 3 Il., table 2.

The invention relates to the field of forestry, mainly the cultivation of a large forest planting material, also can be used in agriculture.

Known methods of weed control include conducting agronomic and chemical measures (Vasilyev N. D. Weeds forest nurseries and measures to combat them: Textbook. a manual for students of the speciality 1512. Yoshkar-Ola: Marg, 1988SS="ptx2">

The disadvantages of the known methods is that to achieve the desired effect requires considerable labor, time and money. The application of herbicides can cause unwanted changes in the functioning of agro-ecosystems forest nurseries.

There is also known a method of weed control, including the care of cultivated plants by repeated tilling of soil in their rows and rows, characterized in that, to improve the completeness of the oppression of weeds and improve conditions for the growth of cultivated plants, before the first loosening of the protective zone of plants consistently mulch layer greatsea thickness of 1.5-2.0 cm, and then a layer of sawdust thickness of 1.5-2.0 cm (A. S. N 1759265, MCI And 01 In 79/02).

As a prototype of the selected method, including mulching crops fresh shredded bark layer of 1 cm (a New technology and mechanisms for growing seedlings of conifers without prescrivere: Methodical recommendations. / A. Sokolov, I., Cypak A. M., Krivenko T. I., Egypti A. E./ Petrozavodsk state technical University, 1995, 32 S.).

The disadvantages of these methods is to carry out such expensive operateswith mulch substrate, requires special equipment in the second case. In addition, such methods of weed control in the school offices forest nurseries we found.

The invention can effectively reduce the infestation landings undesirable herbaceous vegetation, to optimize soil ecology in the school Department of the kennel at the lowest cost of material and technical means, to prevent negative environmental impacts (soil contamination with pesticides, draining the upper horizon of the soil, squeezing seedlings and other) and to dispose of large-scale industrial waste.

This is achieved by the fact that when creating a school directly after planting seedlings produce mulch special substrate with a thickness of 5 cm, which is obtained by mixing a pre-neutralized with lime materials hydrolytic lignin (tonnage of waste hydrolysis of yeast plants) with sand.

In Fig. 1 shows the effect of soil mulching special substrate at the area of the projective cover of weeds.

In Fig. 2 depicts the effect of soil mulching special is his horizon soil (0-5 cm) of the experimental plots depending on air temperature fluctuations.

Description of figures:

1 - the line that represents the dynamics of the projective cover of weeds in areas not covered by the special substrate;

2 - the line that represents the dynamics of the projective cover of weeds in areas covered by the special substrate;

3 - the mass of the aerial part of weeds;

4 - weight of underground parts of weeds;

5 - line, showing the dependence of changes in soil temperature from air temperature in areas not covered by the special substrate;

6 - line, showing the dependence of changes in soil temperature from air temperature in the area covered by the special substrate.

Example: when creating a school of European spruce immediately after planting seedlings produced mulch in strips sit-0.75 per unit to the tractor MTZ-80 special substrate on the basis of hydrolytic lignin and sand thickness 5 see For comparison were left areas where mulch was not conducted. Milestone space regularly processed by the cultivator.

Production of special substrate was carried out in the composting Department of forest nursery. For this lignin b is mixed with sand in the ratio 1:1 by volume.

Studies have shown, the mixture is neutralized hydrolysis lignin with sand is an effective means of weed control. When using it reduces the total number of weeds, their total area coverage (Fig. 1) and biomass accumulation (Fig. 2).

Experience shows that the mixture is based on CH and sand does not provide phyto-toxic effect on the growth of weeds, and the mechanism of its action consists in mechanical suppression of seedlings. This application can significantly reduce the dryness of the arable horizon during dry periods (PL. 1) and to smooth out fluctuations in soil temperature due to change in air temperature (Fig. 3).

Change water and temperature regime of the soil, and reduce competition from weeds, in turn, leads to increased growth of woody plants, which is reflected in the increase of their linear dimensions, the accumulation of dry matter and safety (PL. 2). Further increase in thickness is undesirable because there is a decrease biometric measurements of seedlings.

The proposed method does not require weeding and richline within Peru and improves their quality. At the same time, disposed tonnage of waste hydrolysis of yeast plants and reduces the possibility of contamination of their environment.

The method of combating weeds and enhance the growth of seedlings in forest nurseries, including mulch special substrate, characterized in that immediately after planting seedlings produce mulch special substrate with a thickness of 5 cm, which is obtained by mixing a pre-neutralized with lime materials hydrolytic lignin with sand.

 

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