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Method for determining crop rotation safety interval of bensulfuron methyl residual in soil

A safety interval, Bensulfuron-methyl technology, applied in the field of pesticide residue determination, can solve the problems of high price, and achieve the effect of low price, easy popularization and application, and simple and fast determination method

Active Publication Date: 2017-05-31
INST OF PLANT PROTECTION HENAN ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of analysis method requires professionals to operate and is expensive, so farmers rarely adopt it on their own initiative. Once the residual pesticide damage occurs, the above-mentioned identification and diagnosis of soil samples will be taken, and the losses caused are already irreparable.

Method used

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  • Method for determining crop rotation safety interval of bensulfuron methyl residual in soil
  • Method for determining crop rotation safety interval of bensulfuron methyl residual in soil
  • Method for determining crop rotation safety interval of bensulfuron methyl residual in soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 Selection of Sensitive Indicator Plants for Residual Bensulfuron-methyl in Soil

[0033] The field plot test is carried out by using the method of chemical treatment of soil, and the mass fraction is 10% bensulfuron-methyl wettable powder according to 0g / mu, 0.1g / mu, 0.68g / mu, 1.25g / mu, 2.5g / mu, 5g The doses of / mu, 10g / mu, 20g / mu, evenly spray the soil surface, sow peanuts, and sow a small amount of zucchini seeds at the same time, each treatment is repeated 3 times, normal management, observe the growth status of peanuts and zucchini seedlings, the result peanut seedlings in 10 % Bensulfuron-methyl WP 10g / mu dosage in the field appeared symptoms of phytotoxicity, zucchini seedlings in the field of 10% bensulfuron-methyl WP 1.25g / mu dosage showed growth-inhibited symptoms of phytotoxicity and in 2.5 The phytotoxicity symptom of serious growth deformity was shown in the field of g / mu dosage.

[0034]The field plot test is carried out by using the method of ch...

Embodiment 2

[0036] The steps of the safety interval judgment of embodiment 2 wheat field rotation peanuts are as follows:

[0037] 1. Appraisal field soil preparation: before crop rotation, use " "Plum-shaped" sampling, take a spot in the middle and four corners of the wheat field each time, take 2-3kg of soil for each point, and put each point of soil into two parts into seedling containers (such as flowerpots, plastic cups, etc.), each time A total of 10 seedling containers were installed for sampling;

[0038] 2. Preparation of control soil: Use the commonly used seedling substrate in horticulture as the reference soil, that is, use peat: perlite: vermiculite in a volume ratio of 7:1:2, and put it into 10 seedling containers;

[0039] 3. Sowing seedlings: in 10 seedling containers equipped with identification field soil, zucchini seeds and peanut seeds were respectively planted in the soil taken from the same point, and zucchini seeds and peanut seeds were respectively planted in 10 s...

Embodiment 3

[0066] The steps of the safe interval period judgment of embodiment 3 paddy field crop rotation tobacco are as follows:

[0067] 1. Soil preparation for identification: Before crop rotation and stubble change, use "plum blossom" in the soil of the plowing layer of large-scale paddy fields according to the intervals of 0 months, 3 months, 6 months, 12 months, 18 months, and 24 months. Take a spot in the middle and four corners of the rice each time, take 2-3 kg of soil at each point, divide each point of soil into two parts and put them into seedling-raising containers (such as flowerpots, plastic cups, etc.), and take samples each time. A total of 10 seedling containers are installed;

[0068] 2. Preparation of control soil: Use the commonly used seedling substrate in horticulture as the reference soil, that is, use peat: perlite: vermiculite in a volume ratio of 7:1:2, and put it into 10 seedling containers;

[0069] 3. Sowing seedlings: in 10 seedling containers equipped wi...

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Abstract

The invention discloses a method for determining the crop rotation safety interval of bensulfuron methyl residual in soil, and belongs to the technical field of pesticide residual determination. The method adopting soil before crop rotation of wheat field and rice field as identification field soil comprises the following steps: potting a bensulfuron methyl sensible indicative plant in the identification field soil; and measuring and comparing the seedling height, the root length and the overground part fresh weight reduction of the sensible indicative plant in the identification field soil and the sensitive indicative plant in contrast oil after the sensible indicative plant grows for 7 d, and determining the crop rotation safety interval of bensulfuron methyl residual in soil to succeeding crops. The method has the advantages of low price, accuracy in determination, strong operability, easiness in promotion and application, and provision of effective basis for field safety production management.

Description

technical field [0001] The invention belongs to the technical field of pesticide residue determination, and relates to a method for judging the safe interval period of crop rotation for soil residue, in particular to a method for judging the safe interval period for crop rotation of soil residue bensulfuron-methyl. Background technique [0002] Herbicides refer to agents that can completely or selectively kill weeds, and have the characteristics of specificity and selectivity. With the development of my country's agriculture, the amount of herbicides used has accounted for more than 50% of the total amount of pesticides. If such a large amount of use is used improperly, it is very easy to cause soil residual phytotoxicity of herbicides with long residual period and cause phytotoxicity of crop herbicides. After the residual herbicide in the soil enters the plant through the root system of the plant and is absorbed, the order of distribution in the plant is: root>stem>l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01N33/24
CPCG01N33/00G01N33/24G01N33/245
Inventor 苏旺苍吴仁海徐洪乐王恒亮郝红丹薛飞鲁传涛
Owner INST OF PLANT PROTECTION HENAN ACAD OF AGRI SCI
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