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 Wysłany: Pon 11:37, 31 Sty 2011 Temat postu: Tianshui City, cucumber integrated pest management |
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Tianshui City, cucumber integrated pest management techniques
Promote the development of modern agriculture and effective measures and means. The current crop Guyuan area has reached 6900 facilities. O0hm, including greenhouse 1313.73hm (already into production of 838.13hm), the winter production of greenhouse vegetables, the total output of 150,000 t,[link widoczny dla zalogowanych], output value of 200 million yuan, net output of 120 million yuan. Good warm greenhouse in winter greenhouse vegetable production is to achieve stable and efficient key. In accordance with our experience, the warm winter greenhouse production of freezing measures described below, for the production of reference. A cold trench dug ditch to prevent and alleviate cold indoor and outdoor heat exchanger of the main facilities of soil. Usually cold ditch outside the wall and in front of greenhouse Hill. Before and after irrigation water in the winter to dig wide and deep as 50cm of the ditch, trench fill granulated blast furnace slag, horse manure, straw and other materials, the top 15cm of soil cover real step, and then covered. 2 Gallant thatch shade timely mortgage on the basis of snow in the insulation should be increased by scattering light to the temperature inside the greenhouse, as long as the grass thatch opened after the indoor temperature does not drop, we must expose thatch. Even if the outside temperature is low, and open grass thatch after the temperature has dropped, but also in grass thatch opened around noon, so plants to light, or use the back cover of the aforementioned methods. Yin snow outside at night should be stamped with a grass thatch layer of plastic film in order to improve its thermal efficiency. Cold weather comes, the night should be stamped in a greenhouse around the grass thatch frost,[link widoczny dla zalogowanych], making the indoor temperature 2 ~ 3C. 3 selected varieties of winter cold greenhouse vegetable production should choose strong cold vegetable variety, need to be adjusted according to the production of greenhouse vegetable planting layout. Increase the planting area of leafy vegetables to reduce the proportion of vegetables and fruit and vegetable cultivation in order to play their cold properties of vegetable varieties. 4 preparation of soil heat decomposition of chicken manure, cow dung are good heat ventilation organic fertilizer, using chicken manure, cow dung mixed with soil by a certain percentage of heat-absorbing nature of the preparation of the substrate, heat resistance are good, conducive to crop root growth. Greenhouse vegetable crops in the winter before planting, according to chicken manure, cow dung ratio of 1:3 60t/hm fertilization,[link widoczny dla zalogowanych], and tillage planting, warm cold can also play a role. 5 spraying liquid fertilizer low temperatures encountered in winter, light is weak, greenhouse crops, greatly reduced the ability to absorb nutrients, especially after the leaves wilt suffer frost damage,[link widoczny dla zalogowanych], the light Received date :2009-03-12 Author: Liu Bingyi (1961 a ), male, Guyuan, senior agronomist, is mainly engaged in agricultural experimental research and technology promotion. Tel: (O) 13995042639. E-mail: nxpyhxp @ 126, corn fell to t8 ~ 25 ��, the evening leaked 20 ~ 60min. Average temperature higher than 12C when the outside all night spreading rumors. Yin Tianguang leaked throughout the day according to need less time and pay attention to prevent water splashing people shed indoors. 5.2 The chemical control of downy mildew in 45 before the onset of smoke 3.0kg/hm safe to smoke chlorothalonil, 7d smoked per 1; onset of composite powders with l0% chlorothalonil spray 15.0kg/hm powder, 7 ~ 9d spray 1 or anti-virus with 64% alum WP 500 times spraying, spray each 1 7d, and even spray 3 to 4 times. Occurrence of bacterial angular leaf spot is available when 72% of streptomycin soluble powder 40,005,000 times, 500 times or 30DT fungicide spraying. Botrytis cinerea A mold occurs Spirit 1.5 available 22.5kg/hm powder dust control agent, or a mold WP 65 600 times or 800 times 50 Carbendazim WP spraying . Anthrax can occur 500 times 5 Jiarui agricultural dust, or 5O% carbendazim WP 500 times spraying. Disease occurs when a mold can be used 25 times WP 800, or 64% of the anti-virus alum WP 500 times spraying. Fusarium wilt in 15d after planting or in the early stages, with 50 500 times per plant Carbendazim WP irrigation 0.25kg,[link widoczny dla zalogowanych], separated 1 7d irrigation, continuous irrigation 2 times. With aphids (Aphis gossypii) infestation, the available 10 killed Aphis Smoke 7.5kg/hm, or smoked 22 DDVP Smoke 4.5kg/hm closed 3h; also point in the film occurs when aphids with 21% off EC 40006000 times to kill death, or 2.5 times 5000 EC Uranus, spray every 7 ~ 10d 1 for 2 times. When the average whitefly adults in the three / strains of the following, the spraying wettable powder 25 buprofezin 1500 times control; when the average adult is about 1O head / plant, use a wettable powder 25 buprofezin 1500 times and 2 EC 5000 times Uranus mix .5, 1 or 2 times control. 7d stop spraying before harvest. (This article Zebian: Zhengli Long)
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