General technical requirements for original stock archive xoilac tv trực tiếp bóng đá hôm nay forest tree cultivar in Vietnam under TCVN 13701:2023

1. What is the original stock?

According tobóng đá hôm nay, the original stock is the first generation xoilac tv trực tiếp bóng đá hôm nay a recognized variety or a rejuvenated variety obtained through multiplication from mature trees or parent plants. It includes seeds, tubers, roots, stems, branches, bud grafts, shoots, tissue culture plants, and seedlings.

The original stock is used for breeding materials or establishing variety gardens and seed orchards.

2. General technical requirements for maintaining seed orchards xoilac tv trực tiếp bóng đá hôm nay forest tree cultivar in Vietnam

Seed orchards for forest tree cultivar must meet the following general requirements, according tobóng đá hôm nay:

+ Site selection: The location xoilac tv trực tiếp bóng đá hôm nay the seed orchard must have suitable ecological conditions for the cultivated species.

+ Tree arrangement: Trees should be arranged in separate blocks, according to each variety, with a minimum xoilac tv trực tiếp bóng đá hôm nay 10 trees per variety in the seed orchard.

+ Variety origin: Only recognized varieties should be used.

+ Pest and disease status: There should be no signs xoilac tv trực tiếp bóng đá hôm nay pests or diseases.

+ Survival rate: A minimum xoilac tv trực tiếp bóng đá hôm nay 90% survival rate is required (during the investment phase).

+ Variety name labels: Variety name labels should be placed at the beginning xoilac tv trực tiếp bóng đá hôm nay each row, including the variety code, origin, and planting date.

+ Seed orchard records: Records should include the design plan, list xoilac tv trực tiếp bóng đá hôm nay varieties, variety origin, planting date, number xoilac tv trực tiếp bóng đá hôm nay trees, and care and fertilization logs.

3. Methods for determining criteria in seed orchards for forest tree cultivar in Vietnam

According tobóng đá hôm nay, the criteria for seed orchards xoilac tv trực tiếp bóng đá hôm nay forest tree cultivar are determined using the following methods:

+ Average annual temperature (°C):Based on data from the nearest meteorological station to the planting site over a period xoilac tv trực tiếp bóng đá hôm nay 3 years.

+ Average annual rainfall (mm):Based on data from the nearest meteorological station to the planting site over a period xoilac tv trực tiếp bóng đá hôm nay 3 years.

+ Number xoilac tv trực tiếp bóng đá hôm nay months with rainfall exceeding 100 mm:Based on data from the nearest meteorological station to the planting site over a period xoilac tv trực tiếp bóng đá hôm nay 3 years.

+ Soil depth (cm):Select a representative location, dig a cross+section, and measure the soil depth directly using a ruler.

+ Mechanical composition:Determine based on soil fertility maps and existing data on the mechanical composition xoilac tv trực tiếp bóng đá hôm nay the area, combined with direct field inspections in the seed orchard.

In cases where the composition cannot be determined, soil samples should be collected for analysis using the following methods:

++ Soil sampling method according toTiêu chuẩn Việt Nam TCVN 7538-2:2005 (ISO

++ Determination xoilac tv trực tiếp bóng đá hôm nay mechanical composition xoilac tv trực tiếp bóng đá hôm nay soil according toTiêu chuẩn quốc.

+ Elevation above sea level (m):Use handheld GPS combined with topographic maps.

+ Slope (°):Use specialized slope measuring devices with an error not exceeding 1%, randomly measure at least 3 points in the orchard.

+ Tree arrangement design:observe and compare the design plan with the actual situation in the orchard.

+ Planting distance:Check the design plan and the actual situation in the orchard. Choose 3 rows and use a measuring tape to measure the planting distance between 4 consecutive trees in the middle row xoilac tv trực tiếp bóng đá hôm nay each selected row.

+ Hole size:Measure directly using a measuring tape in the orchard.

+ Fertilization:Determine based on construction records, design plans, and field inspections in the orchard.

+ Care:Determine based on construction records, design plans, and field inspections in the orchard.

+ Duration xoilac tv trực tiếp bóng đá hôm nay seed orchard maintenance:determined based on construction records, design plans, and field inspections in the orchard.

+ Variety origin:Determine based on construction records, design plans for the seed orchard, or use molecular indicators to assess the variety origin.

+ Pest and disease status:observe directly in the orchard.

+ Survival rate:Count the number xoilac tv trực tiếp bóng đá hôm nay living trees and calculate the survival rate using the formula: survival rate = current number xoilac tv trực tiếp bóng đá hôm nay trees / initial number xoilac tv trực tiếp bóng đá hôm nay planted trees x 100%.

+ Variety name labels:observe directly in the orchard and determine based on construction and design records.

+ Seed orchard records:observe directly in the orchard, cross-check with the orchard records.

* Please note thatbóng đá hôm nayapplies specifically to seed orchards xoilac tv trực tiếp bóng đá hôm nay selected tree species such as Acacia hybrids, Eucalyptus hybrids, Casuarina, Melaleuca, and Michelia species, as well as recognized Macca species.

Best regards!

Key word: seed orchards | in Vietnam | Vietnam | original stock |

PleaseLoginto be able to download