Có 32+ tài liệu thuộc chủ đề "nông học"
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It is important to understand that soil is not the property of the land owner, the lease holder or the tenant of the site. It is the property of everyone, now and in the future. Of the three options above, the least sustainable is the most commonly practised (ie technologically supported soils). This is probably because it is the easiest...
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Water, its quantity and quality, can be a major determining factor in the success or failure of a farm. Water flows into this dam by sheet flow and diversion banks can be used to increase the amount of runoff collected.. Underground pipes can be used to transport water to stock drinking troughs.. the roof catchment area – this determines how...
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Contamination of the environment. Certain levels of pests and diseases. Chemicals kill pests and diseases effectively, but there can be problems if you don’t use the right chemical or the right method. Nothing should be used to the detriment of the environment or to the extent that pests get accustomed to the method (as they may build up resistance).. For...
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Safety – some plants may be poisonous or cause allergies (eg St John’s wort, bathurst burr, parthenium weed), others may have spines or spikes (eg giant devil’s fig, currant bush and Chinese apple) or sharp grass seeds that can injure animals and humans (eg spear grass). Harbouring or hosting pests and diseases – some plants may act as hosts or...
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As the resources become depleted or are used improperly, the profitability of the ‘machine’ decreases, wasting resources and diminishing in both production and financial terms.. It can be both disruptive and expensive to change an existing farm from a ‘traditional’. There is no sense in trying to make a farm environmentally sustainable overnight if in doing so you lose both...
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This chapter shows you some of the techniques that are important to ensure sustainability of plant growth.. Which crops are suited to growing in your locality? Some alteration to the soil and climate of the area may be beneficial in the long term. Trying crops new to your area or still in an experimental usage stage can be costly but...
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3 Flows down the branches and trunks of the trees, eventually reaching the ground with far less erosive power (energy) than if it had dripped or fallen directly onto the ground surface. Clear felling on farm land has resulted in the rising of watertables to the detriment of crops. Some tree species may provide supplementary feed for livestock, particularly during...
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Consider the way in which the livestock might need to be managed (eg fencing requirements, frequency of moving animals). This refers to the number of animals that can be supported by a specified area (ie head per hectare). Supplementary feeding and watering may allow stocking rates to be increased on a property or at least maintained during periods of poor...
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It is easy to become confused by the ever-increasing range of new products being offered as an answer to sustainable farming. Many of these products are in fact very helpful, if used in the correct way and in the correct place. Because it is good, or has worked for someone else, doesn’t necessarily mean that the product is suited to...
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“ĐÁNH GIÁ TÌNH HÌNH SẢN XUẤT VÀ ÁP DỤNG MỘT SỐ KỸ THUẬT TIẾN BỘ TRONG SẢN XUẤT RAU BẮP CẢI TẠI CÔNG TY. Thực tập tốt nghiệp là khâu cuối cùng của tất cả các sinh viên trước khi ra trường, nó như là 1 trang giấy cuối cùng để tổng kết lại tất cả những gì đã viết...
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Bảng 4.1: Tỷ lệ mọc mầm và thời gian mọc mầm của các giống sắn tham gia thí nghiệm. Bảng 4.2: Tốc độ tăng trưởng chiều cao cây của các giống sắn tham gia thí nghiệm. Bảng 4.3: Tốc độ ra lá của các giống sắn tham gia thí nghiệm. Bảng 4.4: Tuổi thọ lá của các giống sắn tham...
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Ch ươ ng 3. Màu s c cá s ng n i ắ ố ổ : l ng có màu tím ư nh t, xám đen, ho c xanh lá cây. B ng ạ ặ ụ và l ườ n tr ng óng ánh b c, màu s c này ắ ạ ắ đ c tr ng cho cá s...