-
When is the most critical time for rice pest and disease control?
When should you pay attention to rice pest and disease control? How to achieve good control results? From sowing to the seedling stage, farmers should focus on controlling seed-borne diseases (bakanae disease, rice blast at the seedling stage, white-tip nematode disease, etc.), the small brown planthopper, and the first generation of stem borers. At the rice booting stage, farmers should focus on controlling the brown planthopper, rice leaf roller, stem borers, ear blast,...
-
Rice Pest and Disease Control Methods and Key Technical Points
How to control rice pests and diseases? What techniques can be borrowed for rice pest and disease control methods: 1. Rice black sclerotial stem rot. A fungal disease of the stem base of rice at the adult plant stage, also called rice stem rot or small sclerotial disease. The pathogens are Sclerotium hydrophilum and Sclerotium oryzae of the Deuteromycotina. Sexual state...
-
What are the methods for controlling rice pests and diseases in summer?
How to control pests and diseases in rice in summer? Need guidance. According to trend analysis, in summer and autumn, rice pests and diseases focus on the "three insects and three diseases" (namely rice leaf roller, rice planthopper, striped stem borer, rice blast, rice false smut, and sheath blight). In early September, the sixth (4th) generation rice planthopper, the sixth (4th) generation rice leaf roller, the third generation...
-
How can chemical control of rice pests and diseases reduce pesticide damage?
How to treat rice sheath blight? What methods can be used to prevent and control rice sheath blight? The following measures are mainly taken: 1. Select disease-resistant varieties. 2. Salvage sclerotia to reduce the source of inoculum. 3. Strengthen cultivation management, apply sufficient base fertilizer, apply topdressing early, do not apply nitrogen fertilizer alone, increase phosphorus and potassium fertilizer, adopt formula fertilization technology, so that...
-
What are the precautions for rice pest and disease control?
What should be noted when controlling rice pests and diseases? Advice needed. The control target must be clear: take corresponding pesticide control measures according to the different types of pests and diseases in the field. When mixing pesticides, their content must be clearly understood, especially for the control of neck blast; tricyclazole has 2 formulations, and they must not be confused. Do not arbitrarily increase...
-
What are the main rice pests and diseases? Common types at a glance
How to raise rice seedlings well? Methods wanted. Rice seedling-raising techniques: 1: How to determine the seedling-raising period? For insulated dry seedling-raising of rice, start raising seedlings and sowing after the air temperature steadily passes 5°C-6°C (after covering with plastic film or greenhouse film, the temperature rises above 12°C). In Heilongjiang Province, this is generally in mid-to-late April; do not sow in May. The best sowing period is April...
-
How to fertilize hybrid rice scientifically?
How to fertilize hybrid rice scientifically? The fertilization principles for hybrid rice should be: organic fertilizer and phosphate fertilizer as base fertilizer, potassium fertilizer mainly as tillering fertilizer, nitrogen fertilizer applied evenly in multiple applications, with special attention to plump panicle and plump grain fertilizer, aiming for large panicles and large grains while ensuring sufficient panicles. (1) Base fertilizer mainly organic fertilizer. According to measurements...
-
How should hybrid rice be planted to achieve high yields?
How should hybrid rice be planted to achieve high yields? Technical guidance requested. When planting hybrid rice, pay attention to the following points: 1. Carefully select good seed. The hybrid rice combinations currently being promoted nationwide include double-season early rice, double-season late rice, single-season medium rice early-maturing varieties, single-season medium rice late-maturing varieties, hybrid japonica rice, etc. Different hybrid rice...
-
How to fertilize hybrid rice: a detailed explanation of the methods
How to sprout hybrid rice seeds? What methods work well? In recent years, the main method tested and promoted has been a new safe and rapid sprouting method combining "warm water soaking of seeds with an electric blanket for sprouting," which has effectively solved the difficulty of soaking and sprouting seeds of high-quality rice and hybrid early rice, and is well received by farmers. The main advantages of this method: first...
-
Causes of High Empty and Filled Grain Rates in Hybrid Rice and Control Methods
What should you do if hybrid rice has many empty and shriveled grains? What methods can be used to control the high rate of empty and shriveled grains in hybrid rice? The following methods can be used for control: 1. Adapt measures to local conditions and select hybrid varieties with good recoverability. First, choose varieties with strong tillering ability, sufficient effective panicles, and high seed-setting rate and 1000-grain weight. Second, choose...
条件筛选