SU1047894A1 - Method of inhibiting acidofication in rice field soils - Google Patents

Abstract

METHOD OF INHIBITING ACID FORMATION: IN RISE FIELDS IN SOILS, including plowing straw into the soil, inoculated with a crop, characterized in that, in order to improve the survival of rice plants, simultaneously with straw plowing, it is inoculated with lactic acid bacteria of the genus. Lactobacterium plantn.rum, urrai-w 3 s. at a dose of 10 cells per g conot a. (L

Description

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The invention relates to agriculture, in particular to methods of combating acid formation using rice straw as an organic fertilizer.

A known method of introducing straw into the soil immediately after harvesting to combat acidification of Cl This method does not allow to inhibit acid formation at the beginning of the growing season.

There is also known a method for inhibiting the formation of slogans, including plowing into the soil of sologly inoculated with a culture of microorganisms G2 J.

However, to obtain the effect of inhibiting acid formation, a preliminary 20-day treatment of straw with aerobic bacteria is required, which markedly violates the production technology of tillage and extends the time required for work on rice fields. At the same time, treatment with an aerobic inhibits acid formation only in the first month of the flooded field. Such a short-term effect of treatment is explained by the predominance of anaerobic, restorative processes in submerged soils, which suppress the viability of aerobic microflora.

The purpose of the invention is to improve the survival rate of rice plants when fertilizing flooded soils with a caller by suppressing acid formation.

Goal Achieved Achieved by simultaneously with plowing straw, it is inoculated with lactic acid bacteria of the genus Lactobacterium plantarum, strain 3 s, at a dose of 10 cells per 1 g of straw.

For example, a typical staple of lactic acid bacteria isolated from developed alfalfa silostam 3, the genus Lactobacterium plantarum, was used for inoculation of straw. Liquid culture of strain 3 was made at the rate of 10 thousand cells per 1 g

Experience options

straw. The treatment with bacteria was carried out immediately before storing straw into the soil. In a manufacturing environment, POS or OBT devices were used for treating straws.

To study the effect of treatment with lactic acid bacteria, sologs on soil acidification and survival of rice seedlings were used to carry out night, vegetation, and model experiments on the Lkadeliiska irrigation array of the Alma-Aty region. Long night experiments were laid on rice-marsh soil containing 2.0 of total humus, pH 7.8. Each area had an area of 200 m. Rissov straw was applied at the rate of 6.5 t / ha along with the production dose of mineral fertilizers. The straw was embedded in the soil 2 days before the floor was flooded with a KFS-2.4 cultivator-freesaler. The experience had a threefold repetition.

Vegetation experiments were made in enameled vessels of 24 liters each. The vessels were laid down at -19 kg of strongly saline takyr-like soil with a sum of salts of 6.1%, pH 8.1, and humus 2.0. Mineral fertilizers were introduced in the form of ammonium sulfate and superphosphate (nitrogen 140 kg / ha of active ingredient, phosphorus 98 kg). Straw was applied on the day of vessel flooding at the rate of 10 t / ha. Strongly saline soil was used to clarify the maximum efficiency of treatment with lactic acid bacteria.

Studies show that the treatment of straw with lactic acid bacteria makes it possible to drastically reduce acid production under rice. Especially, the difference in acid content between the variants of experiments in the tillering phase of rice is noticeable.

In tab. Figure 1 gives the amount of organic acids produced by the decomposition of straw treated with lactic acid bacteria.

Table 1

The content of organic acids,%, when sampling

24. Vf.

Control R-, Brought Straw

Straw treated with strain 3 s

21.x.

15.x.

27.VII.

0.08 0.075 0.04 0.11

0.05

0.06

0.55

0.085 As can be seen from the data obtained, in the case of the night experiment, the treatment of straw with lactic acid bacteria makes it possible to reduce the amount of acids by 2.4 times. In the vegetative experience, this technique completely suppresses acid formation. The most toxic for rice plants is butyric acid; therefore, the results of the experiment show that in straw inoculated with anaerobic bacteria, the content of butyric acid is 13 times less than in unprocessed (July-tillering phase of rice).

The pronounced effect of inhibition of acid formation in the treatment of straw with lactic acid bacteria allowed a marked increase in the survival rate of plants on dela.

Table 3 summarizes the effects of solog ous processing by lactic acid bacteria on the survival of rice seedlings.

Continued table. one

Del night experience

Table

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calculating 250 plants on

iM. the beating of her education is a task in rice cultivation. Treatment of bacteria sologs with bacteria reduces the content of butyric acid in the soil (Table 2). In tab. Figure 2 shows the content of butyric acid when rice rice is applied, treated with lactic acid bacteria. ; Table 2: Inoculum of lactic acid and bacteria increases the survival rate of rice plants on the background of straw.

The use of this method allows not to violate the technology of field processing and to embed straw in the spring simultaneously with the sowing of rice, just before flooding, which is especially important for areas with a short summer; gives a cart it is possible to enrich rice soils with maximum amounts of freshly organics; eliminates material costs for the export of straw from the fields and prevents its unproductive burning; increases the survival rate of rice by 10-35%. In addition, since bacteria are anaerobic microorganisms, under anaerobic conditions of flooded soils, they are able to actively prevent acid production for 2–3 months. Lactic acid bacteria are a natural component of biogeocenosis, and their use fully complies with the requirements of environmental protection.

Claims (1)

METHOD FOR INHIBITING ACID FORMATION ^: IN SOIL OF RICE FIELDS, which includes plowing straw soil with an inoculated culture, characterized in that, in order to improve the survival of rice plants, they are inoculated with straw lactic acid bacteria of the genus. Lactobacterium plantarum, strain 3 C. at a dose of 10 ³ cells per 1 g of straw.