Sweet potato soil testing and formula fertilization technology

Sweet potato has strong adaptability to soil and is one of the most resistant to soil acidity. It is also more resistant to alkali. It has little effect on the yield between pH 5.5 and 8.0. However, from the physical properties of the soil, it is ideal for soft, well-ventilated soils. Good ventilation conditions are one of the important conditions for root formation and hypertrophy, and the three elements of fine root absorption fertilizers are significant. Sweet potato requires the most potassium, followed by nitrogen, phosphorus, and has a strong ability to absorb phosphorus from the soil. For every 100 kilograms of fresh sweet potato roots, about 0.55 kg of nitrogen (N), 0.18 kg of phosphorus (P2O5), 0.55 kg of potassium (K2O), and a ratio of nitrogen, phosphorus and potassium of about 2:1:3.
Sweet potato advocates the application of organic fertilizer as base fertilizer, and the topdressing is generally divided into three times, which are divided into seedling fertilizer, sandwich fertilizer and crack fertilizer. The seedling fertilizer can be applied by means of dropping plants after the insertion; the edged fertilizer should generally be applied about 1 month after the insertion, and the ditch is ditched on the side of the ridge, and the fertilizer is applied to both sides of the ridge. The application period of the cracked fertilizer should be determined according to the specific conditions. In the case of less base fertilizer, insufficient growth of mid-term stems and leaves, drought and early-maturing varieties, it is necessary to apply early, and vice versa.

Hua County: Yue Xiuli
【Comment】 【Print this article】 【Close this page】 【Large, medium and small】

Cell Culture

Petri Dishes (Stackable & Slippable)
Manufactured from medical-grade virgin polystyrene
Ventilation ribs reduce condensation and allow air circulation
Consistent flatness allows for even media distribution
Flared lid skirt and squared corners for easy one-hand operation, especially with gloves
Stackable Petri Dishes
Recommended for standard microbiology or general laboratory use
Stackable lid design for increased stability
Available in two sizes: 60mm x 15mm and 100mm x 15mm
Automation Petri Dishes (Slippable)
Designed for automated filling and streaking systems
Side Arrows and ISO Mark Target for automation
Available in 100mm x 15mm size
Petri Dishes (Slideable)
Features a partial edge ring on base which allows a single dish to be slid from a large stack and enhances stability when stacked
Petri Dishes (Non-treated Cell Culture Dishes)
Stronger, heavier construction
Surface is hydrophobic and does not facilitate cell attachment
Available in four diameters: 35, 60, 100 and 150mm
150mm x 15mm Petri Dish now available
35mm dish has off-set bottom for improved handling
60 & 100mm dish features a grip ring on the base
Lids contain molded spacers for gas exchange
Stackable lid design for increased stability

Packaged sterile (gamma irradiated)

Culture Dishes Set

Cell Dish,Inoculating Loops,Culture Plate,Pasteur Pipette,Cell Culture Dish

Yong Yue Medical Technology(Kunshan) Co.,Ltd , https://www.yypipette.com