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Detailed Explanation of Key Techniques for Growing Large-Fruit Watermelons
1. Site selection 1. Soil quality: Choose sandy soil that is loose and well aerated. Black soil with a sand content of about 30-40% is best. For clay soil, increase the number of tillage operations to improve soil permeability; autumn plowing is best. Once the vines have grown to more than 30cm, do not deep-plow, to prevent
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Detailed Guide to Hand-Pollination Techniques for Watermelon
I. Selection of Node Position For watermelons grown under protected cultivation, the fruit-setting node position can be lower; for open-field cultivation in spring, the fruit-setting node position should be higher; for early-maturing varieties, the fruit-setting node position is low; for late-maturing varieties, the fruit-setting node position should be higher. The suitable fruit-bearing node position depends on the variety and climatic conditions. Generally
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What Are the Methods for Determining Herbicide Damage in Rice
Currently, most people mix pesticides when using them in order to increase their effectiveness. However, if used improperly, this can easily cause herbicide damage. How to determine whether it is herbicide damage through investigation and analysis? The following methods are introduced: 1. From
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How to reasonably determine nitrogen fertilizer application rates in precision quantitative rice cultivation
The quantification of nitrogen needs to consider the fertilizer requirements of high-yield rice, the pattern of soil nitrogen supply, fertilizer characteristics and the current-season utilization rate, as well as various changes during the growth period, and includes two parts: total nitrogen quantification and nitrogen fertilizer application methods. Determination of total nitrogen amount: obtained through soil testing and fertilizer recommendation trials
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Common problems after sowing wheat and how to solve them
◇What to do if the wheat variety is chosen improperly? Sowing spring-type and weakly winter-type varieties on medium and early stubble fields will cause the wheat seedlings to grow excessively before winter, which is not conducive to safe overwintering. Countermeasures: On the basis of early hoeing and pressing, earth up around the roots before winter, or apply "mengtou manure" to protect the wheat seedlings for safe overwintering.
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Control Methods for Termites in Pineapple Cultivation
Termites are also called insect officers, commonly known as white ants, large water ants, rising-water ants and shed insects, etc. They are insects of the class Insecta, order Isoptera. It is one of the five major pests worldwide. Symptoms: Termites damage roots, stems and leaves, often living in groups on them, and can induce pineapple wilt and sooty mold,
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How is the reasonable crop load of pear trees determined?
Under normal management and moderate crop load conditions, the flower quantity of mature pear trees is generally excessive; some trees even have a flower-branch rate of 70-80%, bearing flowers all over the tree. Although abundant flowers are the foundation of a high yield, excessive fruit set will lead to a large amount of fruit drop and small fruit, and fewer flowers the following year, resulting in alternate bearing. Even with sufficient fertilizer and water, excessive fruit set cannot be allowed. Therefore, pear trees must be controlled to carry a moderate crop load. There are many methods for determining a reasonable crop load. Among them are cultivation experience and numerical indicators. For example, according to the planned yield per unit area, divide the load among individual trees, then calculate the number of fruits each tree should retain based on single-fruit weight, and distribute this among the major limbs; retain 1 fruit per several new shoots so that fruits are evenly distributed among branches; retain 1 fruit per a certain number of leaves, and calculate the number of fruits to retain and their reasonable distribution; retain fruits according to their distribution distance in the canopy; retain fruits based on the single-fruit weight and size of the pear, using experience to guide retention - if fruits were small last year, retain fewer this year; if fruits were too sparse and too large last year, retain more this year; year after year, research has also proposed retaining fruits according to trunk cross-sectional area, which is suitable for young bearing trees. The reasonable crop load is affected by many factors such as cultivation conditions and quality requirements. Its indicators for reasonable crop load should be adjusted in a timely manner. For example, with the development of the market economy, the quality requirements for pears have increased, and the price difference between grades has widened; producing more small fruits is not as good as producing fewer large fruits. For Yangxin Yali pears, pear growers previously demanded a yield of 5000 kg per mu, but now demand a yield of 4000 kg of high-quality fruit per mu. This is because producing 4000 kg of high-quality fruit is more profitable than producing 5000 kg.
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Important reasons why autumn shoots are the main fruiting mother branches of longan
Longan, like other subtropical evergreen fruit trees, grows new shoots throughout the year, and in the Fuzhou area it flushes 4-5 times a year: 1 spring flush, 1-2 summer flushes, 1 autumn flush, and winter shoots are less common, with large numbers of winter shoots emerging only under warm winter conditions. According to Huang Jinsong
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Analysis of the Causes of Low Fruit Set in Apricot Trees and Solutions
Apricot tree (scientific name: Armeniaca vulgaris Lam.) is a deciduous tree, terrestrial, with hairless plants. Leaves alternate, broadly ovate or round-ovate, with rounded blunt serrations on the margins; flowers solitary, white or slightly red; fruit nearly spherical, mostly white, yellow to yellow-red, often with a red blush; seed kernels
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What to Do When Lettuce Bolts? Cause Analysis and Countermeasures
Lettuce (scientific name: Lactuca sativa L. var. angustana Irish.), also known as celtuce, is a biennial or annual herbaceous plant in the genus Lactuca of the Asteraceae family, a variety of Lactuca sativa that can form a fleshy tender stem. Also known as stem lettuce, asparagus lettuce, green lettuce, and lettuce vegetable. Harvest period: January to April. It originated in Central or North China
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