دانلود تحقیق آماده در مورد انواع گلخانه با فایل پاورپوینت

دانلود تحقیق آماده در مورد انواع گلخانه با فایل پاورپوینت

دوستان عزیز برای شما یک تحقیق آماده در مورد انواع گلخانه با فرمت پاورپوینت و اسلاید های زیبا آماده کردیم همچنین با قابلیت ویرایش و پرینت گرفتن می باشد به راحتی می توانید تغییر دهید

مشخصات تحقیق آماده در مورد به شرح زیر می باشد :

• عنوان تحقیق : انواع گلخانه
• فرمت فایل : PowerPoint (.ppt)
• قابلیت ویرایش : دارد
• چاپ : بدون مشکل در پرینت گرفتن
• تعداد اسلاید : 38

اسکرین شات اسلاید های این تحقیق آماده در مورد انواع گلخانه

قسمتی از متن انتخاب شده از داخل فایل پاورپوینتی :

Greenhouse is used as one of the methods of growing plants in many regions of the world. These structures have different characteristics and are different depending on the type of use and the area where they are located. In this article, we will examine different types of greenhouses, their characteristics and their different uses.

گلخانه پلاستيکي
Plastic greenhouse is one of the most common types of greenhouses. These greenhouses are made of plastic sheets and are used in many parts of the world for growing tropical crops such as cucumbers, tomatoes, eggplants, etc. Plastic greenhouse is very popular due to its low cost, easy installation and light weight.

گلخانه شيشه‌اي
A glass greenhouse is one of the most expensive types of greenhouses that use glass for its structure. This type of greenhouse is used for growing plants that need lower temperatures, such as flowers, vegetables, houseplants, etc. The glass greenhouse is used because of creating an environment with a favorable temperature, increasing the growth process of plants and increasing the yield of the product.

گلخانه تونلي
Tunnel greenhouse is another type of greenhouse that is made of plastic sheets and designed in a tunnel shape. These types of greenhouses are used for growing vegetables, ornamental flowers, etc. Due to its lower cost and easier installation, the tunnel greenhouse can be a suitable option for farmers with a limited budget.

تعریف گلخانه:
گلخانه بخش محدودی از فضاست كه در آن كلیه عوامل محیطی قابل كنترل بوده و برای كشتهای متراكم و تولید محصول خارج فصل و یا خارج از محیط طبیعی گیاه احداث میگردد.

مفهوم گلخانه :
Every plant needs special conditions in terms of light intensity, day and night temperature, relative air humidity and soil moisture to grow optimally. Greenhouse refers to a building with a wooden or metal frame and under controlled conditions (temperature, humidity, light, carbon dioxide, etc.) with transparent materials (glass or plastic) in order to allow natural light to pass through for the growth and development of plants. is covered

در احداث گلخانه‌‌ها باید به عوامل متعددی توجه شود:
1. Providing the required light. The most important factor is light. Providing light is very important for greenhouse plants. On cloudy and winter days and in areas where the amount of light is less, artificial lights are used, and greenhouses should be built in a direction that absorbs light. The frame and cover of the greenhouse should also be designed and built so that enough light reaches the plant. In bright summer days, by pulling mats or dark nets or sprinkling flowers and colors before washing on the greenhouse cover, additional light should be prevented from penetrating the greenhouse.
2. Providing heat. It is very important to provide the right temperature for the growth of the plant, especially in the cold and cloudy days of winter. Greenhouse cover should be chosen from the type that has the least heat loss. Sometimes double layers are used to reduce heat loss. Of course, at times of the year (hot summer days) there is a need to reduce the temperature of the greenhouse and cooling operations must be done. The best type of fuel for heating and cooling devices is gas. Some people use diesel and oil, but the cleanest fuel is gas.
3. تأمین دی‌اکسیدکربن. دی‌اکسید‌کربن یکی از فاکتورهای ضروری در عمل فتوسنتز می‌باشد. افزایش غلظت دی‌اکسیدکربن به صورت مصنوعی در محیط گلخانه باعث رشد مطلوب گیاه، زودرسی محصول و افزایش کیفیت و کمیت آن می‌شود.
4. تأمین رطوبت كافی. هوای گلخانه ممکن است خیلی خشک و یا خیلی مرطوب باشد که در حالت خشک باید مرطوب شده (با تجهیزات رطوبت‌ساز) و در حالت خیلی مرطوب باید رطوبت‌زدایی شود (با انجام عمل تهویه).

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