Potato fruiting period in greenhouse

1. Prevention and control of diseases. In the early stage of the disease, spray 75% methyl topiramate 600-800 times, or 40% carbendazim 400 times, or anthrax Fumei 600 times, to control anthracnose, powdery mildew, blight, etc. Control bacterial scab with 72% agricultural streptomycin 20 g / mu, or 25% Qingkuling wettable powder: use 72% Purek water agent, or 30% malodulin water 800-fold solution, or 70% mancozeb wettable powder 500-fold solution to control Fusarium wilt and Botrytis cinerea; use 20% virus an or 1.5% phytolin wettable powder 500-fold solution to control virus disease Control late blight, continuous blight, continuous rot, etc., with 72% Kloe wettable powder 600 times 800 times, or 77% Ke wettable powder 500 times, etc.; 5% Shuangke dust, or 5% chloromethyl dust, or 5% chlorothalonil dust 1 kg / mu) can be used to control a variety of diseases.

two。 Pest control: spraying ① larvae at low instar stage: spraying 0.9% avermectin 3000 times to control tea yellow mites; using 10% wettable powder to control aphids 1000 times; using 2.5% kungfu EC, or 10% imidacloprid EC, or 4.5% cypermethrin EC 1500 times to control aphids, cotton bollworm, tobacco green insect, beet armyworm, Liriomyza huidobrensis. Spray once every 5-7 days, 3 times in a row. ② physical control: yellow boards or yellow tubes can be set up to trap and kill whitefly, Bemisia Tabaci, aphids, Liriomyza huidobrensis and other pests that have a tendency to yellow, or cover with silver gray plastic film to ward off aphids. ③ biological control: actively protect and utilize natural enemies, when adults of whitefly are found, aphid wasps can be released; biological agents, such as 1.8% Chongmike concentrated soluble water agent, or 2% chlortetracycline (Ningnanmycin), or 72% agricultural streptomycin sulfate soluble powder, or 5% carbazem EC, etc., are used to control diseases and insect pests.

The application of facility cultivation technology, plastic film mulching technology to improve the commercial value of vegetables, the use of small arch, plastic, sunshade net and insect prevention net have been mastered and applied by the majority of farmers. The greenhouse with controllable temperature, humidity and gas can also be used in cities with good conditions, which breaks the traditional habit of growing vegetables depending on the season and climate, and its commodity value is greatly improved. Protected cultivation can also reduce and prevent the occurrence of diseases and insect pests by artificially controlling climate and soil (substrate) conditions, so as to make pollution-free vegetable production a reality. If pests are found in vegetable peppers planted in the greenhouse, some natural enemies can be artificially released to control the occurrence of pests, so as to reduce the number of insecticide spraying and make vegetable products safer.