-
What are the excellent foreign walnut varieties?
1. Payne. Origin and distribution: native to the United States. Currently, its cultivation area in California, United States is second only to Hartley. It belongs to the late-bearing walnut variety type. Fruit economic traits: nuts medium to small, average single nut weight 11.25 grams. Suture tight, kernel out
-
What are the excellent foreign walnut varieties?
1. Chandler. Source and distribution: native to the United States, it is a hybrid progeny of Pedro XUC56 - 224. It is the main early-bearing walnut variety planted in the United States and was introduced into China in 1984. Economic traits of the fruit: the nut is large, with an average three-diameter measurement of 4.4 cm and an average single-nut weight of 12.86 g. The nut shell
-
Comprehensive Analysis of the Morphological Characteristics of Walnut Trees
I. Root System The portion of the walnut below the root crown is collectively called the root system, which is divided into the primary root, lateral roots and fibrous roots. The primary root is well developed, the lateral roots extend far horizontally, the fibrous roots are numerous and the root system is vigorous. Generally speaking, the root system of precocious walnuts is more developed than that of late-bearing walnuts, and this is especially evident in young trees.
-
What are the eight major factors affecting the survival rate of grafting?
In the past, walnut grafting was relatively difficult and the survival rate was low, until around 2000 when the problem was solved, the grafting survival rate increased to over 90%, and grafting workers everywhere could master this skill proficiently. Overall, there are many factors affecting walnut grafting survival, and in production
-
What are the common methods of walnut grafting?
There are many methods of walnut grafting. According to the grafting time and the type of scion, they can be divided into two categories: branch grafting and bud grafting. A grafting method that uses a section of a shoot with buds as the scion is called branch grafting, while one that uses only a single bud piece as the scion is called bud grafting. Common branch grafting methods include cleft
-
Key Technical Points for Cultivation and Management of Walnut Trees During the Growth Period
Based on the significant changes in tree growth and development characteristics throughout the life of a walnut tree, the growth period of the fruit tree can be roughly divided into: juvenile stage, initial fruiting stage, full fruiting stage, and senescence stage. In production, corresponding cultivation and management technical measures can be adopted according to the characteristics of each growth and development stage
-
What is the effect of mulching in walnut orchards?
Orchard mulching is an important technical measure for achieving high quality and high yield in dryland walnut orchards. Orchard mulching improves soil fertility, changes the underground water, air and heat environment, suppresses weed growth, reduces the occurrence of pests and diseases and reduces the labor used for hoeing, and can provide the walnut tree roots
-
Rational Intercropping Cultivation Models and Key Technical Points for Walnut Trees
Intercropping is an important cultivation model. Rational intercropping can make full use of space, land and light energy, and improve economic returns, especially the early returns of young walnut orchards. The types and methods of intercropping should follow the principle of not affecting the growth and development of walnut trees. According to
-
When is the best time to pollinate walnut trees? A detailed explanation of pollination methods
1. Collecting pollen. Select robust adult trees locally or elsewhere, and collect male inflorescences whose bases are about to shed pollen (the inflorescences turning from green to yellow) or that have just begun to shed pollen. In a dry, ventilated indoor space without direct sunlight, place the inflorescences on clean sulfuric acid paper or newspaper
-
A Detailed Guide to the Pruning Characteristics of Walnut Trees at Different Ages
1. Pruning timing. The pruning timing for walnuts differs from that of other fruit trees. Because pruning walnut during the dormant period after leaf fall causes "bleeding" (sap flow) from the wounds, leading to nutrient loss, weakened tree vigor, and even dead branches, it should not be done in winter. Walnut bleeding period
条件筛选