A kind of method of controlling parasitic weed Lidang

Abstract

The invention relates to a method of preventing and treating a weed, orobanche coerulescens, through an agricultural bio-degradable mulching film combined with biocontrol bacteria. The method includes the steps of preparing a fermentation liquid of pythium aphanidermatum, performing centrifugal, elution on a column and concentration to the fermentation liquid to prepare a pythium aphanidermatum powder, preparing the bio-degradable mulching film containing the pythium aphanidermatum powder, and paving the mulching film in the field on which crops and the orobanche coerulescens are grown. The method is excellent in preventing and treating effects, avoids pollution caused by chemical agents through the bio-controlling technology, and is more durable in the preventing and treating effects since the synergistic effects of the bio-degradable mulching film is combined.

Description

technical field [0001] The invention relates to a method for preventing and controlling weeds, in particular to a method for preventing and controlling weeds through the combination of agricultural biodegradable plastic film and biocontrol bacteria. Background technique [0002] Xinjiang is the main processing tomato planting and processing base in my country. Cantaloupe is a famous specialty in Xinjiang. In addition, crops such as melon, sunflower, and stevia are important economic crops in Altay, Tacheng and other places, but these crops are without exception. The land was seriously harmed by the root parasitic seed plant Liedang, and caused serious economic losses. When the temperature and humidity are suitable, the seeds will start to germinate and grow small germ tubes when exposed to the stimulation of the host’s root exudates in the soil, and the top of the germ tubes will be adsorbed on the lateral roots of the host to absorb the nutrients and water of the host, that ...

AI Technical Summary

Problems solved by technology

[0006] At present, there are two main ways to solve the "white pollution" caused by plastics. One is to recycle the used plastics, but this is restricted by the use of plastics, categories, and economics. Generally speaking, recyclable plastics Limited, most of these plastics are made of petroleum, which cannot be degraded in the natural environment after use, and can also resist bacterial erosion, so the recovery rate is low, so it cannot completely and effectively solve the "white pollution" "Secondly, vigorously promote the use of degradable plastics, which is one of the effective ways to solve the problem of "white pollution"

However, most of the degradable plastic base materials are polyester polymer materials. Since the molecular arrangement of polyester is a linear arrangement during the synthesis process, when it is made into finished agricultural mulch film, the longitudinal tear strength is too low to meet the normal requirements. Therefore, the molecular chain arrangement of the molecule is changed during the synthesis, its branching degree is improved, and the "knot" effect between the molecules is effectively improved, thereby improving the physical and mechanical properties of the polyester polymer material. Meet the requirements of film laying required for normal crop growth

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