-
Detailed Explanation of Key Management Techniques for Corn at the Ear Stage
The ear stage of corn refers to the period from jointing to tasseling, and is a stage in which vegetative growth and reproductive growth proceed together. During this period there is both vigorous growth of roots, stems and leaves, and the differentiation and development of the female and male ears; it is the period of the fastest development, the largest growth amount, and the greatest
-
Key Technical Points for Summer Corn Planting and Field Management
Most summer corn has already entered the jointing stage to the large trumpet stage; therefore, doing a good job of chemical regulation for lodging prevention at the jointing stage, ear fertilizer application, and pest and disease control is crucial for achieving high corn yields. 1. Scientific chemical regulation. Because the wheat growth period was delayed, corn sowing dates were generally later, and the jointing stage coincided with the rainy season, planting hidden risks for corn lodging. Chemical regulation not only makes corn stalks tough, the root system well developed, and lodging resistance stronger, but also deepens leaf color, thickens leaves, increases chlorophyll content, and enhances photosynthesis. It can generally reduce plant height by 10-15 cm and ear height by 10-12 cm, and can also shorten internodes, shaping an ideal high-yield plant form with good ventilation and light penetration. It plays a role in drought resistance, disease resistance, lodging resistance, and promoting reproductive growth, helping to produce large cobs, more kernels, heavier kernels, and a low bare-tip rate. It increases density by 200-400 plants per mu, with a yield increase generally of 15%-30%, truly achieving “seeking high yield within dense planting.” The time for chemical regulation is generally when corn has 6-13 expanded leaves, and the effect is best at 8-13 expanded leaves. Before the 6-leaf stage, corn leaves are slender and the leaf surface is smooth. When corn reaches the 7-expanded-leaf stage, the leaves become broad and thick, and fine soft white hairs appear on the leaf surface that can be easily felt with the back of the hand; this is the best time to spray chemical regulation agents. For the spray agent, the top choice is Dinongbao, the latest research achievement of the Chinese Academy of Agricultural Sciences.</p><p>2. Topdressing ear fertilizer. During the ear stage, the absorption of mineral nutrients is greatest and the absorption intensity is highest; this is the period when corn absorbs nutrients fastest and is also the most important fertilization period in its life. Topdressing nitrogen fertilizer at the large trumpet stage can effectively promote the differentiation of female ear florets and achieve large ears with many kernels. Generally, 20-25 kg of urea or nitrogen-potassium compound fertilizer can be topdressed per mu. The topdressing method can be trenching beside the rows or hole application deep beside the plants, preferably combined with irrigation or applied during effective rainfall. Never broadcast fertilizer on the soil surface to prevent fertilizer loss.</p><p>3. Strengthen pest and disease control. For pests and diseases at the summer corn ear stage, focus on controlling brown spot and corn borer. Brown spot can be controlled by foliar spraying with 12.5% Hexaconazole or 12.5% Triadimefon; corn borer can be controlled at the large trumpet stage by pouring phoxim granules into the whorl or by spraying the heart leaves with 4.5% beta-cypermethrin emulsion or 50% phoxim emulsifiable concentrate. </p>
-
Key Points of High-Yield Cultivation Techniques for Intercropping and Relay Cropping of Medicinal Tree Peony
Tree peony is a precious Chinese medicinal herb with a long growth cycle, high yield and stable and considerable economic benefits. In recent years, market demand has been increasing. In order to improve economic benefits, the Bozhou Municipal Institute of Rare Medicinal Herb Cultivation has, through years of trial planting, successfully developed a new technique for
-
Detailed Explanation of Key Points of Rapid Propagation Techniques for Tree Peonies
The tree peony is a traditional famous flower of our country and is deeply loved by people. If its rapid propagation problem can be solved and production costs reduced, it will greatly meet market demand. Propagation methods for tree peonies include division, grafting, cuttings, layering, and so on. Comparatively speaking, grafting is still the better method for tree peony propagation.
-
Orchid cultivation experience sharing: master these key points to grow orchids well
Orchids have been one of the prominently famous ornamental flowers in our country since ancient times. Their soft and elegant leaves, quietly refined and pure white flowers, and distant and exquisite fragrance make them a treasure among flowers. There are about 500 genera and more than 10,000 species of Orchidaceae plants in our country. The orchids usually appreciated are the terrestrial orchid varieties in the genus Cymbidium.
-
How to Grow Lilies? Detailed Key Points for Cultivation in Solar Greenhouses in Northern China
Facility Conditions Irrigation systems used in Northern China include drip irrigation, sprinkler irrigation and homemade sprinkler irrigation, among which the common ones are flood irrigation and homemade sprinkler irrigation. The advantages of flood irrigation and homemade sprinkler irrigation are that they are economical and practical. The disadvantage of flood irrigation is that the moisture is not easy to control, and it will increase the greenhouse temperature,
-
Detailed Explanation of Key Points for Off-Season Lily Cultivation Techniques
Lilium is a perennial bulbous flower, and the following points should be noted for its off-season cultivation: 1. Bulb selection. At present, lily bulbs for commercial cultivation in China are mainly imported from the Netherlands. Bulbs with plump scale development, no disease spots or mold, and well-developed roots should be selected for planting. Suitable
-
How to Grow Hydrangea? Master These Key Cultivation Techniques
Hydrangea, also known as bigleaf hydrangea, is a deciduous small shrub in the Hydrangea genus of the Saxifragaceae family, with emerald green leaves, bright flower colors, and a long ornamental period, and is deeply loved by people. Plant Characteristics Hydrangea is native to China's Yangtze River basin and the provinces to its south, with a natural plant height of 1 to 2 m, and the potted height is mostly controlled at
-
Key Technical Points for Greenhouse Cultivation and Management of Dragon Fruit
Dragon fruit, also known as red dragon fruit, green dragon fruit, immortal honey fruit, etc. Currently cultivated varieties mainly include white dragon fruit, red dragon fruit, and yellow dragon fruit. Dragon fruit is very nutritious, mainly containing vitamins, cellulose, glucose, carotene, fat, amino acids, and
-
Fertilizer and Water Management Methods and Technical Key Points for Pitaya Orchards
(1) Fertilization Pitaya, like other cactus plants, has a smaller growth volume than conventional fruit trees. Therefore, fertilization should follow the principle of sufficient amounts, small quantities, and multiple applications. Young trees (1 to 2 years old) should be mainly fertilized with nitrogen fertilizer, applied thinly and frequently, to promote tree growth. Mature trees (3 years old and
条件筛选