We manufacture lapidary equipment suitable for the hobbyist, to professionals. Redwood machines are highly thought of in this field.
Two aluminium 150/ 200mm lapping plates
Drip taps for coolant
Two stepped pulleys giving 3 speed combinations
Precision shaft on self-centring ball bearings for durability and ease of maintenance
Provision for two 203/150 x 25.4mm wide wheels
Adjustable Aluminium work rests
Rugged construction finished in baked enamel
Bench tray with convenient drainage outlet
Supplied with one tapering polishing mop spindle
Specialised Tapered Spindles
We design and manfuacture all types of tapered spindles for any type of machine. Types of tapered spindles we produce are.
RH and LH stainless steel or mild steel tapered spindles 25mm to 50mm coarse thread or fine thread
Metric or Imperial internal threads
Long series and short series tapered spindles
Hexagon and round bodied tapered spindles
Diamond Lapidary Glass Grinder Polisher and Saw Lapidary Grinder Polisher, Lapidary Cab King Grinder, Lapidary Cabbing Grinder, Diamond Lapidary Arbor, Diamond Trim Saw, Diamond Slab Saw, Diamond Cutting Saw Hans Superabrasive Material Co., Ltd. , http://www.hansuperabrasive.com
When the potato is added with potassium fertilizer during growth, it can increase the swell pressure of the crop cells, make the cells rich in elasticity, and can regulate the opening or closing of the leaf cells, which is beneficial for the crop to absorb more carbon dioxide to make carbohydrates and form starch and sugar. Class II; can promote root development, absorb more water, alleviate water evaporation, improve crop drought resistance; three can promote the development of stem cellulose, improve the support capacity of stems, enhance crop resistance, resistance to pests and diseases It is beneficial to transport organic nutrients (starch) in crops to storage organs (underground rhizomes, fruits), accelerate the expansion of roots and pods, thereby increasing yield and improving quality.
The application of potassium fertilizer in potato production generally adopts two methods: base fertilizer and topdressing. The distribution of NPK fertilizer, 50% nitrogen fertilizer, all phosphate fertilizer and most potassium fertilizer. The fertilizer type of the base fertilizer can be selected as a general-purpose compound fertilizer, and a single fertilizer can also be used. Urea, ammonium nitrate and potassium sulfate can be used for 50% nitrogen and a small portion of potassium used in top dressing.
At the time of application, the period in which potassium is most needed should be seized. One is the seedling stage. Each acre can be applied with 3 to 5 kg of potassium chloride or potassium sulphate or plant ash (containing 7.5% of effective potassium) 25 to 30 kg as the base fertilizer, evenly spread when the soil is prepared, and the soil and fertilizer are mixed. Potassium fertilizer can also be applied as a seedling fertilizer. It should be applied with 2 to 3 kg of potassium fertilizer per acre or a hole. The depth requirement is about 10 to 15 cm. After fertilization, the soil is filled with water. The second is in the tuber formation period. The same amount of potassium fertilizer can be used per acre, and the application of crack fertilizer and potato fertilizer after the expansion of the potato block or the lower needle of the fruit pod can effectively accelerate the organic nutrient of the stem and leaf to the potato block. In the late growth stage of potato, 1% potassium sulphate or 0.3% potassium dihydrogen phosphate or 5% ash water (after immersing for 24 hours, take the clarified liquid or filtrate), spray 1 or 2 times outside the root (interval 7) ~ 10 days), can reduce leaf temperature, is beneficial to drought, and eliminate pests and diseases (in combination with prevention and control of pests and diseases), the effect is very significant.
It should be noted that the time of top dressing should not be too early, and it is generally carried out after the expansion of the potato pieces. Premature topdressing, especially after a large amount of nitrogen fertilizer, will cause the aboveground part to prosper and the lower part to form small potato pieces. Potassium chloride and potassium sulphate are physiologically acidic fertilizers. Long-term application should prevent soil acidification, and can be applied with appropriate amount of lime. Potassium chloride should not be applied to salinized soil.
Potatoes have potassium-sparing properties, and the demand for potassium is large. In cultivation, the application of potassium fertilizer should be emphasized. For every 1000 kg of potato tubers produced, 5 kg of pure nitrogen, 2 kg of diphosphorus pentachloride and 10.6 kg of potassium chloride are absorbed from the soil, and the absorption ratio of NPK is 1:0.4:2.1.
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