Suitable for different soil types Mini Screw Driver,Ground Screw Driver,Electric Screw driver Hebei Honde Plastic & Metal Co., Ltd. , https://www.foundation-system.com
As the saying goes: crops need three treasures, nitrogen, phosphorus, potassium fertilizer is essential. In the process of planting crops, farmers' friends can get a bumper harvest according to the different characteristics of the crops and the actual demand for nitrogen, phosphorus and potassium fertilizers. So, how do you judge the crop deficiency?
1. The main symptoms of nitrogen deficiency are: new branches are short, short, leaves are small, erect, leaves are grayish green, petioles, veins and cortex become red; flowers are small, fruit is early and easy to fall off; fine roots, large roots, new roots Yellowing, reduced resistance to pests and diseases and drought resistance. In the case of soybeans, nitrogen deficiency in the growth period begins with the lower leaves, and the leaves become lighter and pale green. Later, they gradually turn yellow and dry, and sometimes bronze spots appear on the leaves. In severe cases, the plants stop growing and the leaves gradually fall off.
2. Phosphorus deficiency In the early stage of crop growth, the role of phosphate fertilizer is not obvious, but in the middle and later stages, phosphorus deficiency will affect the effective accumulation of nitrogen and protein synthesis. Phosphorus deficiency in different crops has different symptoms.
2.1 The performance of phosphorus deficiency in wheat is: the seedling grows slowly, the root system is poorly developed, the tiller is reduced, the base of the stem is purple, the leaf color is dark green, slightly purple, the ear small particles are small, and the 1000-grain weight is significantly reduced.
2.2 The performance of phosphorus deficiency in maize is: slow growth in seedling stage, obvious symptoms in the 5th leaf stage, purple red leaves, short and small corn cob, curved shape, premature baldness, most of the seeds are not full.
2.3 The performance of soybean phosphorus deficiency is: the leaf color becomes darker, it is dark green or black green, the leaf shape is small, sharp and narrow, and it stands upright, the plant is small and the growth is slow. In severe cases, the stem may appear red, and if the soybean is deficient in phosphorus after flowering, the leaves will appear brown spots.
2.4 The performance of phosphorus deficiency in fruit trees is: poor fruit quality, slow growth, rare leaves, yellowish brown leaves, prone to early shedding.
3. Potassium deficiency in different crops is characterized by different symptoms:
3.1 The tip of the lower part of the general crop turns yellow, gradually yellowing along the edge of the leaf, and the veins on both sides and the midrib are still green. In severe cases, most of the leaves are yellow and the edges of the leaves are burnt.
3.2 The cereal crops showed weak tillering power, soft stems and easy lodging.
3.3 The leaves of dicotyledons are curled, gradually shrinking, and sometimes the leaves are broken, but the middle part of the leaves remains green.
3.4 The quality of the root crop is reduced and the quality is poor.
3.5 The fruit ripening period is inconsistent, the pulp is increased in wood, and the taste is sour and not delicious.
Huaxian County Agricultural Products Inspection and Testing Center Chang Bili
Cost saving and Saving time
Short assembly time and Quick mounting
Immediately loadable and Quick changes of position
HD Model 20,for installing Ground Screw sizing of 76x1200mm or smaller ;mainly applied for mounting garden fences, safety fences, traffic sign post and advertising boards.HD Model 30 and Model 50,for installing ground screw sizing of 89x2000mm or smaller ;mainly applied for solar farm construction, carports, flagpoles, sun shading ,wooden houses and playground facilities.
This Electric ground screw drivers are designed to install or remove various sizes and types of ground screws.This driver is shipped completely assemble.There is a reverser on the handle of host machine.When we push the reverser,the host machine will contrarotate,Then ground screw will be drilled out.When the ground screw work normally,the adjusting knob of control instrument can be adjusted to maximun.It can ensure the host machine output the biggest torque.
features
1,high quality ground screw electric-driver
2,easy and fast install
How to judge crop deficiency
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