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Key Technical Points for Dry Seedbed Raising of Rice Seedlings in Plug Trays under Large and Medium-Sized Plastic Tunnels
(1) Seed selection. Choose varieties of superior quality, high yield, disease resistance and medium-to-upper tillering capacity that tend toward the heavy-panicle type. In the first accumulated temperature zone, represented by Wuchang and Tailai, suitable main varieties include Wuyoudao No. 1, Songjing No. 2, Tengxi 140, Wudao No. 3 and Mudanjiang 19; in the second accumulated temperature zone, represented by Ning'an, Fangzheng, Yanshou, Huachuan and Suihua...
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What are the methods for controlling underground pests in sunflowers?
How should underground pests be controlled when growing sunflowers? The main underground pests of sunflowers include mole crickets, white grubs, cutworms, wireworms, and other soil-dwelling pests. The control measures are as follows. (1) Agricultural control. ① Before sunflower emergence or during the peak outbreak period of 1st to 2nd instar cutworm larvae, promptly remove weeds from the field, bury them deep or haul them out of the field for composting, to eliminate egg-laying hosts.
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What are the morphological characteristics of eucalyptus? Understanding the appearance of eucalyptus in one article
Evergreen plants, with periodic shedding of old leaves within a year. Most species are tall trees, a few are small trees, and very few are shrub-like. Crown shapes include spire-shaped, multi-branched, and weeping forms. Simple leaves, entire margins, leathery, sometimes covered with a thin layer of wax. Leaves can be divided into juvenile leaves, intermediate leaves, and mature leaves...
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What does continuous and alternating soybean cropping mean? Read this article and you will understand
How should soybean leaf spot disease be prevented and controlled? What are the causes of the disease? 1. Distribution Soybean leaf spot disease occurs in Sichuan, Henan, Shandong, Jiangsu and other places in China, and occurs more often in autumn soybeans. 2. Symptoms The lesions on the leaves are light brown to grayish white, irregular, with dark brown edges. In the later stage, the lesions develop...
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What is longan crown gall disease? Understanding this disease in one article
What is longan crown gall disease? How should it be prevented and controlled? Longan crown gall disease is a newly discovered disease on longan trees. When branches and trunks are affected, it causes premature tree decline. 1. Symptoms: In the early stage of infection, small protrusions appear on the affected branches and trunks, which gradually enlarge to form tumors with a rough or uneven surface and a suberized texture....
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Do sweet potatoes need vine turning? Read this article and you will understand
Do sweet potatoes need vine turning? Please share this with readers: experiments have proven that when sweet potatoes (also called shan yu or di gua) are not vine-turned during the growing period, they can increase yield by about 25% compared with plots where vines are turned, and some even reach as high as 30%. The main reason vine turning reduces sweet potato yield is: damage to vines and leaves. Practice has proven that each time vines are turned, 66...
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What are the common pests of open-ground roses? Understand them in one article
Roses are flowers prone to many pests. Before carrying out control, you must first understand the symptoms of the pest damage and identify which pest it is; second, you need to understand the timing and patterns of the pest's occurrence so as to treat the right cause. Here we introduce the 4 most common pests. Aphids Aphids gather on the buds, tender leaves, and flower buds of roses to suck...
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What are the methods for controlling underground pests of sweet potatoes?
How to control underground pests of sweet potatoes? Please give guidance. During the period of rapid tuber expansion of sweet potatoes, drench the root area once every 10-15 days with a clarified infusion made from 25-30 times diluted superphosphate mixed with dry, clean plant ash, or with a 15-20 times diluted clarified tobacco leaf infusion, etc., for 2-3 consecutive drenches, applying about 5-6 kg per sq m of soil each time...
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What are the methods for controlling underground pests in sweet corn?
How to control underground pests in sweet corn? Please advise. The underground pests damaging sweet corn mainly include mole crickets, white grubs, wireworms and cutworms. These pests damage sweet corn in their larval stage, mainly during the seedling stage of sweet corn, causing dead seedlings and missing plants. To ensure full and strong seedlings, integrated control should be carried out....
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What Is the Relationship Between Lisianthus and Balloon Flower? Understanding the Differences in One Article
Only ?? days until the release of the Species Calendar 2019. In today's closing "Calendar Girl's Big News" segment, the question that Species Calendar original illustrator @Li Liang will answer is: How are those beautiful illustrations painted? Is there a tutorial? More questions...
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