Yuzhong City in Sichuan Province has been selected as one of the 51 county-level cities participating in the national demonstration and promotion project for rice mechanization and transplanting technology. This year's implementation has revealed several challenges that require attention, and the following points are summarized for reference.
**I. Issues Identified**
(1) Inconsistent seedling emergence was observed at the four demonstration sites. These sites used winter paddy fields for raising seedlings, primarily with soft disks and a small number of hard disks, following strict technical procedures. The seedlings were raised using dry, swollen, and bud valleys, but on days five to ten after planting, they showed uneven growth, varying in color and thickness.
(2) After mechanical transplanting, many seedlings were broken. Farmers reported higher breakage rates, mainly due to incomplete emergence, excessive fertilization, rapid growth, inconsistent stem thickness, and overly long leaf blades.
(3) A significant number of gaps were found after transplanting, requiring farmers to manually fill them. This issue was largely due to the lack of artificial sowing and the impact of two cold spells before and after the Qingming Festival.
(4) The nursery period was too long. The city started the seedling process on March 27 and transplanted the seedlings from April 28 to May 18, resulting in a total period of over 40 days, which affected the quality of the seedlings.
**II. Solutions Proposed**
(1) To address the uneven emergence, comparisons between last year’s and this year’s drought and germination conditions were made. It was found that dry field seedlings had better moisture management and more uniform growth.
(2) To prevent seedlings from being broken during transplanting, "dwarf, strong, and uniform" seedlings should be cultivated strictly according to the standards for mechanical planting and transplanting.
(3) To reduce the number of missing nests, three key stages must be carefully controlled: first, selecting high-quality seeds and removing non-germinating or weak grains; second, precise sowing using a seed drill, with the seeding rate divided into three to four applications—50% initially, 30% next, and 20% finally, with 10% pressing after each step; third, effective pest control to prevent seedling death.
(4) Proper timing of the nursery period is essential. Seedlings should be transplanted appropriately, ideally within a 40-day window, and efforts should be made to avoid the cold spell periods around the Qingming Festival each year.
By addressing these issues through improved techniques and careful planning, Yuzhong City aims to enhance the effectiveness of rice mechanization and transplanting projects, ensuring better yields and more sustainable agricultural practices.
Anthocyanidins
Anthocyanidins is a kind of water-soluble natural pigments widely existing in plants in nature. They are colored aglycone obtained from the hydrolysis of anthocyanins. Most of the main colorants in fruits, vegetables and flowers are related to them. Under the condition of different PH value of plant cell vacuoles, anthocyanidins make the petals colorful. The main functions about anthocyanidins are antioxidant and free radical scavenging function, nutritional fortifier in food and Natural Pigment.
Black Berry Extract,Mulberry Fruit Extract,Cranberry Extract Powder,Blackberry Flavoring Extract
Xi'an Longze Biotechnology Co., Ltd. , https://www.bestbilberry.com