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What are the control methods for the rice stem borer (Chilo suppressalis)?
How do you control the rice stem borer? Here are the control methods. The rice stem borer, also known as the stem maggot, can damage rice from the tillering stage to the milk-ripening stage, posing a threat to rice production and affecting both yield and quality. Doing a good job of controlling the rice stem borer is of great significance for promoting high rice yields and increasing farmers' income. The control methods are as follows:...
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What are the control methods for bacterial leaf streak of rice?
How do you control bacterial leaf streak of rice? Please provide guidance methods. Symptoms of bacterial leaf streak of rice damage: it can occur from the seedling stage to the ear stage of rice. The lesions are yellow, initially yellow, then turning yellow-brown, until completely rotted. If the disease occurs before the heart leaf emerges, it cannot continue to grow upward and dies within the heart, forming a false dead heart, hence it is also called heart rot disease....
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What are the key points for late-stage rice management?
What should be noted in late-stage rice management? Please give an introduction. Late-stage rice management requires attention to the following points: Do not arbitrarily increase the amount of pesticide. Blindly increasing the dosage of chemicals raises the cost of disease and pest control and easily causes crop phytotoxicity. In addition, pesticides must be mixed and used immediately to prevent chemical reactions between pesticides...
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Detailed Explanation of Key Techniques for Licorice Seedling Raising and Transplanting
Licorice is an important medicinal herb. With the strengthening of national ecological and environmental protection, the use of wild resources has become very limited, and licorice seedling raising and transplanting techniques have become very important. Licorice is a perennial herbaceous plant of the Fabaceae family and is listed by the state as a key controlled medicinal herb. Glycyrrhizic acid, as a sweetener, is 200-300 times sweeter than sucrose, ...
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Licorice is best planted after autumn plowing; otherwise it affects seedling emergence and seedling survival.
1. Seed treatment: before sowing, treat the seeds with 60-100°C water for 30 seconds; then soak them in warm water for 1 day and night, and the germination rate can reach 50%. If concentrated sulfuric acid is used, remove the seeds immediately when the seed coat turns black and rinse them in clean water, then soak them in warm water; sow when the seeds swell, and the germination rate can reach more than 90%. 2. Planting metho...
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What are the key management considerations for the late stage of rice cultivation?
What should be noted in the late stage of rice cultivation? Please provide an introduction. In the late stage of rice cultivation, attention should be paid to the following aspects: 1. Late-stage water management: Do a good job of field water management to ensure smooth heading and flowering, maintain root vitality, and effectively guarantee smooth grain filling. During the booting and heading stages, keep deep water in the field, but it is not advisable to irrigate deep water for too long at one time...
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What are the key points of rice late-stage management techniques?
How should rice be managed in the late stage? Please provide an introduction to the management methods. Rice late-stage management can refer to the following methods: 1. Disaster prevention and resistance. The late growth stage of rice is a season with frequent typhoons, rainstorms, abnormally low temperatures, and extreme high temperatures. We must firmly establish the awareness of fighting disasters to secure a bumper harvest, always pay attention to weather information, and for rice fields with incomplete supporting facilities...
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How to fertilize rice at the late stage? Master these technical points
How to fertilize rice at the late stage? Please introduce the method. Late-stage rice cultivation requires skillful fertilizer application. The sowing period for soybean after rice is from late July to early-to-mid August; too early or too late will both affect soybean growth. Specifically, sowing should be done within one week after the rice harvest. The sowing rate depends on the seed size of the variety, plant height, number of branches, soil fertility and fertilizer level.
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Can gibberellic acid (920) be sprayed on rice to promote heading?
Can gibberellic acid (920) be sprayed on rice to promote heading? Please give an introduction. Gibberellic acid, also known as gibberellin, 920, is a broad-spectrum plant growth regulator. It mainly enters the plant body through leaves, young shoots, flowers, seeds or fruits, and then is transported to actively growing parts to take effect. This agent can promote cell elongation,...
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How to scientifically manage water and fertilizer in the middle and late stages of rice?
How should water and fertilizer be managed in the middle and late stages of rice? Please provide an introduction to the management methods. Water and fertilizer management in the middle and late stages of rice can refer to the following: (1) Apply panicle fertilizer cautiously as appropriate to promote large panicles, full grains, and high yield. Based on the earlier rice seedling growth and field diagnosis results, for fields with high soil fertility, strong water and fertilizer retention capacity, many tillers, and darker leaves, delay, reduce, and lower the application rate of panicle fertilizer, generally applying 4-5 kg of urea per mu at the 5th-7th stage of panicle differentiation or at the penultimate leaf stage; for fields with poor fertilizer retention capacity, insufficient tillering, and lighter leaf color, appropriately increase the panicle fertilizer rate earlier, generally applying 6-8 kg of urea per mu at the 4th leaf from the top stage when entering the panicle initiation stage, and spray trace element fertilizers such as potassium dihydrogen phosphate on the leaves at the initial heading stage to increase grain filling and raise yield.
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