His use of plant allelochemicals Weed Control in _

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His use of plant allelochemicals Weed Control in

Pastures are well known, its role is mainly physical in nature shading | containing his plant allelochemicals for cover, suppress weeds effect is better. For example, in apple orchards, if the use of sorghum, Suzhou, grass, spring cover, some weeds can reduce 9O%, but with the same amount of peat soil Ze move would be invalid. Sorghum, barley, oats, wheat, rye cover the weed, purslane, crabgrass and other weeds will be significantly reduced, and as control,[link widoczny dla zalogowanych], using poplar sawdust for mulch, then suppress weeds is less. This effect shows that work is not only the physical role. ② In the rotation system, the role allocated to him a sense of continuous cultivation of plants Monday if the same crop locations, there were several specific weeds, crop rotation can reduce the occurrence of weeds. In the rotation, there will be arrangements for crop allelopathy in, it will inhibit weeds. For example, oat and sunflower monoculture for five consecutive years, oats rotation contrast, the amount of weeds rotation area for less than one. ③ the symbiotic plants. Each other when the two plants Hunzai plant growth are well known as the symbiotic combination of plants. If a weed suppressing surface sulfuric acid does not affect their partners Hunzai crop crop growth, then each will get high yields. For example, although Li beans other than grass weed suppression, but can promote the growth of cereal crops, it can be Hunzai with cereal crops to increase each other's production. (Continued on page 31) Figure 1 Structure of automatic MASCA storage devices if the CO to reach the lower limit or upper limit, it is necessary to add air, so that the upper limit of concentration of (3), and then repair the air from the O3% of the generating device dressing air input storage library, on the one hand to maintain the upper limit of 0, on the other hand to put children under the limit of CO (2). Because it is conducted in two phases and c O control, it is called the air and used air and finishing methods. Without changing the dressing in this way the O concentration in the air, so it has the advantages of ease of automation. Enter the storage and repair of air friction in the amount of air be calculated by computer. In addition, air can occur from the repair of air compressor in the direct access device. MASCA way in the complex can be applied to this method. e. MASCA automatic air and used air and repair the MASCA, can be easily automated (Figure 1). Storage database to monitor the use of q (s 4O page on Smilax) ④ weeds with weed control. Use of weed competition and allelopathy, so that no effect on the crop cultivated weeds dominated the harmful effects to the strong to suppress weeds. Large as the United States occurred in California waters, weeds, algae and Canada Potamogeton quilt blankets waterborne weed suppression cattle disappear, this phenomenon shows that the liquid discharged from the cow felt inhibited the growth of Potamogeton. Because of water, nutrients did not change, proved to be caused by inhibition of allelopathy. In addition, the use of broad-leaved Monochoria paddy straw to suppress weeds is also possible. In addition, winter weeds to grow fallow fields, thereby inhibiting the growth of summer weeds, green manure or planted to block the arrow weed suppression, improved soil fertility, is also possible. 1. Repair air generating device, 2. Air compressor, 3. Air dry blasting machine, 4. Pressure regulator, pressure gauge 5, 6. Solenoid valve, 7. Ai the slot, 8. Gas storage tank, 0. Flow regulator, 10. Flow meter, 1I. Humidifier, 12. Ling library, 13. Repository, H · and fans, 15. Delay relays, 16. Holding air intake, 17. Regulator, I8. o2 monitor, 10. C monitor. And CO components to complete automation. When the storage database 0: down under the limit, open the air tubes of the electromagnetic valve to add air, when the upper limit to be reached is closed. When c rose to the upper limit, open air tube valve repair, to be closed down again when the lower limit. That can be developed using the upper and lower limits Min-Sheng components, rather than using the computer, can automatically control the environment within the gas storage exposed. If the repository is installed in all sensitive components on their own, can also be achieved using this method complex MAS. . -CA automation. Day materials to Lake Tribune o-o. o-o. o-o. o ~. ****** O * 々々々々 song won five, concluding remarks by his sense of Weed Control in substance, synthetic or extracted by Jie as a pesticide use, or as a new track grass Jing's lead compound to be used. In addition to these methods, there are students, or eco-Jun-ho anti-trace. But in general, is also being used as a Control in the quality of thumb method of weed is not yet mature, and many issues remain to be studied further. Tan material obstacle to retaining agricultural day horticultural s Pay attention Chun-hwan (South China Agricultural University) technology on t Qiubi Sheng. lj