Control techniques of Diseases and insect pests in Pear Orchard
At present, when the pear orchard is in full bloom, fruit growers should timely control the following diseases and insect pests at the end of pear flowering:
Pear gall midge and pear planthopper: according to the flowering situation of pear trees, spray control in time at the end of flowering. The medicament can choose 10% Shenjian 1500 times liquid plus 10% Shijia pyridine 2000 times liquid.
Pear rust and pear scab: timely spray control at the end of pear flowering. The medicament can choose 15% Fen Ning 1500 times liquid or 45% Dasheng 800-1000 times liquid, plus 105Shi Gao 6000 times liquid.
Pear ring disease and pear branch rot: control after 10 days of pear Xiehua. Pear ring rot can be sprayed with 21% Fukang 800-1000 times or 68.5% DuPont 800-1200 times or 45% Dasheng 800-1000 times, and pear branch rot can be controlled with 50% carbendazim 800 times.
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Shihua Guotao No. 3
Shihua peach No. 3: Shihua peach peach line nectarine variety, fruit appearance pink, single fruit weight ≥ 200g, flesh yellow, mature in mid-May to late May on the market. It is suitable for protected cultivation in the north and south. Rain Water should prevent fruit cracking in many years. Cultivation mode: for example, according to the old production and sparse planting method (planting 25089 plants per mu), the traditional cultivation mode of deep digging holes is adopted, which not only increases the investment cost, but also puts into production late, the economic benefit is slow, and the light utilization rate is low, the fruit quality is poor, the yield is low, and agricultural standards.
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Six measures in melon garden to make melons and fruits sweeter
Enlarging the diurnal temperature difference is beneficial to the accumulation of photosynthates (sugars). In the fruiting period of muskmelon, the diurnal temperature difference should be enlarged as much as possible. Generally, the temperature in the greenhouse is kept at 30 ℃-35 ℃ during the day, 13 ℃-14 ℃ at night, and the temperature difference between day and night is 16 ℃-18 ℃. Less application of chemical fertilizer, heavy application of organic fertilizer is mainly organic fertilizer, no or less application of chemical fertilizer is another effective measure to improve the sweetness of muskmelon. Generally, chicken manure and bean cake are the main organic fertilizers, which can be applied per mu.
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