Pre-harvest Management of Premature Pears
The cultivation area of ​​early ripening pears has been expanding year by year. However, due to the lack of scientific management methods and methods, the majority of growers have experienced premature aging of pears, and the results have been decreasing year by year. The quality of fruits has been declining and the economic benefits have been poor. In particular, due to warm winters, hot weather in early spring, late spring and other complicated and changeable meteorological conditions, resulting in an increase in the number of pests and diseases. Therefore, the current occurrence of the disease, early occurrence, multiple occurrences, re-discovery, for this purpose, pear growers should focus on three aspects of management according to specific circumstances. 1. Land and Fertilizer Management: A shallow plowing (combination of weeding) is performed on plowed orchards that have not been plowed last autumn and winter season. Conditional interplanting of green mung bean, Indian mung bean, etc. is conducted at the same time. At the same time, top dressing is performed according to tree vigor and soil fertility. Sulfur potassium fertilizer 0.2-0.3 kg to meet the growth and development needs of young fruit. For the poorly-drained plots, the combination of plowing and ploughing should be used to clear the gutters to reduce the humidity and reduce the occurrence of diseases. 2. Pest Control: From the current observations of Linhai and Xianju, it has been discovered that pests such as pear stem bees, aphids, leaf roller, leaf aphid, leaf aphid, pear herbivorous moth, leaf weevil, and pear wood aphid have entered the Wangfa period this year. Relatively early to 7-10 days, so sunny should pay close attention to spray control, the right medicine, focused, and other governance. Commonly used insecticides include: Acanthopanax, Dichlorvos, Surprise 1, Killing, Zhengrui, Abamectin, Methotrexate, etc. According to the instructions on medication and watering, do not increase the dosage blindly so as not to cause injury and resistance. Medicinal. At the same time as pest control, it is necessary to use both sterilizers to treat rust, rot, ringworm, and star diseases. The commonly used sterilizing agents include Kaisheng, Xiansheng, Dasheng M-45, benomyzole, carbazole, carbendazim and thiophanate-methyl. For Yehuo, a severely damaged pear orchard, it should be sprayed once again in late April or early May. For pear orchard bee damage orchards, the current site should be quickly cut off the 3-5 cm of the lower part of the bitten shoots, and centrally destroyed to reduce the harm in the coming year. In the spray pest control pest control at the same time according to the fruit tree (real) growth of the trace elements need to spray foliar fertilizer, commonly used foliar fertilizers are: Tsui Kang Hua Guo Ling series, cosan, potassium dihydrogen phosphate, borax and so on. 3. Thinning fruit: Control the amount of fruit. Due to the serious autumn flowers and fruit, this year's flowering season has been chilling and chilly. Most of the pear orchards have reduced flowering volume and fruitage compared with previous years, and the number of preserved fruits should be increased to improve economic efficiency. The fruit thinning should be carried out in different times. The first fruit thinning can be carried out in the middle of April when the fruit is clear. The fruiting should be completed at the end of April and early May, to reduce nutrient consumption, so as not to affect the differentiation of flower buds (primordium) and affect the results of the coming year and the phenomena of size and annual results. Corn Starch,Organic Corn Starch,Corn Starch Native,Food Grade Corn Starch SHANDONG BAISHENG BIOTECHNOLOGY COM , https://www.baishengbioproducts.com