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Water-permeable and fertilizer-permeable non-absorbent black net covering weed control method

A black net and black technology, applied in the new field of weed control, can solve the problems such as difficulty in permeating water and fertilizer through black film mulching, and achieve better weed control effect, reduction of heavy metal concentration, and good economy.

Inactive Publication Date: 2018-07-20
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to solve the problem that the existing black film cover is difficult to permeate water and fertilizer, and to find a material that can control the growth of weeds and can also permeate water and fertilizer

Method used

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  • Water-permeable and fertilizer-permeable non-absorbent black net covering weed control method
  • Water-permeable and fertilizer-permeable non-absorbent black net covering weed control method
  • Water-permeable and fertilizer-permeable non-absorbent black net covering weed control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: Planting Hyperaccumulator Sedum Sedum Southeast in Contaminated Soil

[0023] The site of this experiment was selected on the polluted land of a farm of South China Agricultural University, and compared the black film mulching of the current popular weed control technology, the black net mulch of the newly added weed control technology and the blank control without mulching, Sedum sedum was planted.

[0024] (1) The test started on November 7, 2016. After the land leveling was completed, it was evenly divided into 14 square plots of 1×1㎡. Take the dried sludge with a hammer and crush it, then mix it evenly and spread it on each test plot, apply the amount of 3kg / ㎡, mix it with the soil, and randomly distribute 14 plots (2 plots After determining the land treatment, according to the random equivalent principle, a sample was taken from each plot with a bamboo tube (sampling depth 0-20cm, three points were mixed into one sample) as the soil sample at the initial...

Embodiment 2

[0037] Embodiment 2: planting Cd low accumulation corn

[0038] On the basis of the experimental research in Example 1, the advantages of mulching black nets to control weeds are demonstrated again. By planting low-Cd corn varieties, different weed control measures simplify weed management during planting, and safely use polluted soil to obtain safe agricultural products.

[0039] (1) The test lasted for 80 days and the test started on June 27, 2017. After the previous test ended, the original treatment of plowing and leveling the land remained unchanged. Using the original black net and new black film (the black film was stretched after being taken out of the ground and the gap was too large, so it was replaced), the corn planting method was 3×2 plants, 3 seeds were planted in each hole, and the corn plant was stretched to 20cm. Thin the seedlings once, and leave one seedling in each hole to continue to grow.

[0040] (2) On July 26, weeding and weed biomass were collected f...

Embodiment 3

[0054] Example 3: Determination of heavy metals leached from potted corn

[0055] On the basis of the experiment of planting corn in the plot, in order to improve the impact of rainwater leaching on the concentration of heavy metals in the soil, further pot experiments were carried out to collect the amount of rainwater in the pot and measure the concentration of heavy metals Cd and Zn in the infiltration water, and finally calculate the corn planting cycle based on the concentration and volume Inside, the amount of soil heavy metal leaching.

[0056] (1) The test started on July 14, 2017. The soil was taken from the spare site of the test plot for potting experiments. After the soil was dried and ground, it was mixed through a 5mm sieve and the same quality soil was taken for potting experiments. Each potted plant The same mass of soil was taken to determine the initial heavy metal value of the soil.

[0057] (2) Put 5 kg of ground dry soil into the potted plants, water for ...

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Abstract

The invention discloses a water-permeable and fertilizer-permeable non-absorbent black net covering weed control method, and belongs to the field of agricultural production and agricultural environmental protection. According to the method, a high-density black non-absorbent net covers the ground, the growth of weed can be effectively controlled, the labor cost of weeding is reduced, and water andfertilizers can be permeable. Compared with weeding ground cloth, due to the non-absorbent black net, weed seeds on the net cannot get enough water to germinate and grow, the weed control effect is better, the black net is non-degradable, therefore, the black net can be used many years, and it is conductive to reducing cost. Compared with the black film covering, the black bet covering increasesthe infiltration of rainwater, the soil moisture content is increased, one on hand, the black net does not need to be uncovered when the fertilizers are applied, a certain fertilizer protection effectis achieved, on the other hand, the rainwater can wash the soil, which is conductive to reducing heavy metals in the surface soil, thereby the best comprehensive effects are achieved, and the black net is especially suitable for planting repairing plants in the heavy metal contaminated soil.

Description

technical field [0001] The invention discloses a novel weed control method. The method covers the ground with a high-density black non-absorbent net, which can effectively control the growth of weeds, save labor costs for weeding, and can permeate water and fertilizer, and has a leaching effect on heavy metals in the soil. It is also conducive to water and fertilizer conservation, and belongs to the fields of agricultural production and agricultural environmental protection. Background technique [0002] There are many kinds of weeds in the process of agricultural production, and they are highly adaptable. They often compete with target crops for water and fertilizer, as well as space and sunlight. While weeds grow, they sometimes become intermediate hosts of diseases and insect pests, directly or indirectly affecting the yield and quality of crops. In modern agricultural production, the large-scale use of herbicides has produced more and more drug-resistant weeds; chemical...

Claims

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Application Information

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IPC IPC(8): A01G13/02A01B79/00
CPCA01B79/00A01G13/0268Y02A40/22
Inventor 吴启堂刘朋林贤柯卫泽斌蒋成爱马强
Owner SOUTH CHINA AGRI UNIV
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