The practice of using corn stalk returning equipment to crush and incorporate the stalks directly into the field as a base fertilizer for wheat is an effective strategy that saves labor, boosts productivity, and enhances soil fertility. However, in some cases, the benefits are not clearly visible. According to surveys and analysis, the main issue lies in the lack of integration with proper agronomic practices. So, how can we better combine these methods to improve the effectiveness of straw returning? Here are the key points to consider:
First, ensure thorough crushing. Fresh corn stalks are brittle and easy to break. Therefore, it's important to harvest the corn at the right time—when about 80% of the stalks are still green, and the ears have turned yellow but are not dry. After cutting, the stalks should be immediately crushed to achieve short, fine residue that spreads evenly across the field. Properly crushed stalks reduce sugar loss, which helps speed up decomposition and increases the availability of nutrients in the soil.
Second, apply a small amount of nitrogen and phosphorus fertilizer. The decomposition of corn stalks in the soil is a microbial process that consumes existing nitrogen, phosphorus, and moisture. Research shows that the ideal carbon-to-nitrogen-to-phosphorus ratio for decomposition is approximately 100:4:1, while corn stalks contain about 100:2:0.3. This means that the natural nutrient balance is insufficient, leading to competition between the decomposing straw and the wheat plants for water and nutrients. To prevent this, adding around 4.5 kg of pure nitrogen and 1.5 kg of pure phosphorus per acre when incorporating 500 kg of straw can help accelerate decomposition and provide essential nutrients to the wheat seedlings.
Third, till or hoe the field after crushing and fertilizing. Once the stalks are broken and fertilized, they should be immediately incorporated into the soil through plowing or hilling. This ensures even distribution of the residue, mixing it with the topsoil (0–100 mm depth), and cutting the root pods to aid decomposition.
Fourth, plow deeply. The plowing depth should be between 200–250 mm to ensure that the straw is well-buried throughout the soil layer. This promotes faster decomposition and maximizes the fertilizer effect.
Fifth, irrigate after plowing. After the straw is turned over, the soil may become compacted, making it difficult for the straw to decompose and for wheat seeds to germinate. Adequate irrigation is necessary to break up the soil crust, support straw decomposition, and ensure sufficient moisture for wheat growth.
Sixth, prepare the seedbed properly. Before sowing wheat, the soil should be finely tilled to eliminate large clods and create a smooth surface. This improves the contact between the straw residue and the soil, speeding up decomposition and meeting the agronomic requirements for optimal wheat planting.
Seventh, apply frozen water and green water. During the decomposition process, a significant amount of moisture is required. If water is not provided in time, the straw may not break down effectively, and conflicts with wheat seedlings may occur. Therefore, it’s important to apply frozen water early in spring to promote decomposition and ensure adequate moisture for wheat growth.
Dichlorophenylphosphine Basic Information
Product Name: Dichlorophenylphosphine
CAS: 644-97-3
MF: C6H5Cl2P
MW: 178.98
EINECS: 211-425-8
Mol File: 644-97-3.mol
Dichlorophenylphosphine Chemical Properties
Melting point: −51 °C(lit.)
Boiling point: 222 °C759 mm Hg(lit.)
Density: 1.319 g/mL at 25 °C(lit.)
Fp: >230 °F
Storage temp. :Store below +30°C.
Form: Liquid
Specific Gravity: 1.319 (20℃)
Color: Clear colorless to slightly yellow
Sensitive: Moisture Sensitive
Phenylphosphonium Dichloride,Diphenylphosphine Chloride,Phenylphosphinic Acid,2-Hydroxyethylphenylphosphinic Acid,Phenylphosphonic Dichloride,Phenylthiophosphonochloride
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