How to prevent rice shrinking disease

Rice seedlings that exhibit phosphorus deficiency typically show signs during the tillering stage, where growth slows down. These plants appear stunted, with thin stems, erect and dark green leaves, and neatly arranged leaf clusters. The angle of the leaves becomes narrower, and some may develop red tips. Older leaves often turn brown or even die. This condition is usually caused by a lack of available phosphorus in the soil, low soil or water temperatures, or the presence of harmful reducing substances like hydrogen sulfide or ferrous compounds, which impair root absorption. Additionally, excessive nitrogen fertilizer can disrupt the nutrient balance, leading to phosphorus deficiency. To address this, it's essential to measure the available phosphorus content using the "Soil Testing and Fertilization" method and apply an appropriate amount of phosphorus-based fertilizer accordingly. Zinc-deficient rice seedlings display different symptoms depending on the severity. Mild deficiency shows brown spots at the base of the leaves, while moderate deficiency causes yellowing, chlorosis, and whitening of the middle parts of the leaves. Severe zinc deficiency results in shortened internodes, stunted growth, smaller and shorter new leaves, weak plants, poor tillering, blackened roots, delayed heading, and significantly reduced yields. This issue often arises from low levels of available zinc in the soil, excessive use of phosphate fertilizers, or an imbalance between nitrogen and zinc. The application of insufficient organic matter combined with prolonged waterlogging can also contribute to zinc deficiency. To prevent or manage this, applying 1 to 1.5 kg of zinc sulfate per 667 square meters is recommended, or foliar spraying with a 0.1% to 0.2% zinc sulfate solution after the seedlings have slowed down. Salt-alkali damage is a complex problem involving salinity, alkalinity, phosphorus deficiency, and zinc deficiency, commonly found in coastal rice-growing areas. Symptoms include the upper parts of the leaves turning yellow and drying out, followed by rapid root necrosis. Leaves may curl vertically at the tips, and chlorosis starts from the base, gradually moving upward until the leaves die. This occurs when the soil or irrigation water has high salt or alkali content, or when the pH of the irrigation water is too high. To control this, it’s important to perform alkali neutralization in salt-alkali soils. During the rice growing season, irrigation water should be carefully managed according to the plant’s salt tolerance at different growth stages. Maintaining a water level difference of more than 40 cm between the surface and drainage helps reduce soil acidity and improve overall plant health.

Double Port

We provide double pp ports of various specifications for infusion soft bags, and we adopt advanced equipment and mould to ensure the quality of the products. Our ports have technical patent and low welding temperature.This lead to a higher product yield and lower bag leakage rate.Our products have good compatibility with drugs.The first-class workshop environment ensures the cleanliness of the product.

Double Port,Dual Port,Double Usb Port,Double Input Port

Suzhou CRH New Material Technology Co.,Ltd. , https://www.crh-health.com