Single late rice hybrids prevent late decay

Single-crop hybrid rice was affected by high temperature and drought in the early stage, and some plots were growing poorly. Now it has entered the booting stage. Premature aging is an important obstacle to the high yield of middle-season rice. Therefore, management should protect the roots of the leaves, prevent premature aging, increase the photosynthetic intensity at the heading stage of rice, achieve the purpose of increasing grain gain, and achieve stable yield and high yield of middle-season hybrid rice. Prevention of premature aging should take the following measures: The application of panicle fertilizer to the base fertilizer is insufficient, the yellow heavy heavier fields should be applied before the heading urea 2.5-3 kg per kg, to promote flower bud differentiation, to prevent the degradation of spikelets. During the breakage period to the early stage of grouting, use 100 g of potassium dihydrogen phosphate per acre and add 0.5 kg of urea (deeper leaf color should not be added with nitrogen fertilizer). Add 50 kg of water and dilute it evenly to spray on the leaf surface for 2-3 consecutive days. Times. In order to save labor, it can be conducted simultaneously with disease prevention and pest management. Water-soaking and root-raising hybrid mid-season rice should be properly irrigated to cool down if it encounters high temperatures during the heading and flowering stage. After the panicle begins, wet irrigation should be carried out to protect the roots by gas and prevent premature aging of the roots. Avoid water cuts prematurely, otherwise humans will lead to premature aging. It is advisable to cut off water 5-7 days before harvesting. Comprehensive late-senescence of the disease-preserving and leaf-preserving hybrid mid-season rice will cause leaf scorch and damage to the tip of the leaf, resulting in reduced yield. Spraying fungicide can receive significant disease prevention and leaf protection and increase production. The method is to use hybrid rice at the heading stage, use 40% WPZ or 40% chlorophyll powder 75g per acre, add 50 kg of water and dilute it evenly and spray it on the middle and upper leaves (with the leaf surface). Fertilizer mix spraying). At the same time, the prevention and control of pests and diseases, such as sheath blight, bacterial blight, rice smut, and rice planthopper, must be done to ensure the high quality and high yield of mid-season hybrid rice. China Agricultural Network Editor